STD::ISTRINGSTREAM(3)

📦

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💖 NAME 💖

okay so bestie, welcome to the manual page for std::basic_istringstream< _CharT, _Traits, _Alloc >(3) — it's giving Library Functions Manual energy, and it's literally all about Controlling input for std::string. no cap.

✨ SYNOPSIS ✨

#include <sstream>

Inherits std::basic_istream< _CharT, _Traits >.

🌸 Public Types 🌸

typedef ctype< _CharT > __ctype_type — a typedef, iconic.
typedef basic_ios< _CharT, _Traits > __ios_type — another typedef moment.
typedef basic_istream< char_type, traits_type > __istream_type — yes, typedef.
typedef num_get< _CharT, istreambuf_iterator< _CharT, _Traits > > __num_get_type — typedef, slay.
typedef basic_streambuf< _CharT, _Traits > __streambuf_type — typedef vibes.
typedef basic_string< _CharT, _Traits, _Alloc > __string_type — the string type, periodt.
typedef basic_stringbuf< _CharT, _Traits, _Alloc > __stringbuf_type — the stringbuf type.
typedef _Alloc allocator_type — allocator type, as promised.
typedef _CharT char_type — char type.
enum event { erase_event, imbue_event, copyfmt_event } — The set of events that may be passed to an event callback.
typedef void(* event_callback) (event __e, ios_base &__b, int __i) — The type of an event callback function.
typedef _Ios_Fmtflags fmtflags — This is a bitmask type.
typedef traits_type::int_type int_type — int_type, okay.
typedef _Ios_Iostate iostate — This is a bitmask type.
typedef traits_type::off_type off_type — off_type, yes.
typedef _Ios_Openmode openmode — This is a bitmask type.
typedef traits_type::pos_type pos_type — pos_type, fr fr.
typedef _Ios_Seekdir seekdir — This is an enumerated type.
typedef _Traits traits_type — traits type, lowkey essential.
typedef num_put< _CharT, ostreambuf_iterator< _CharT, _Traits > > __num_put_type — yep, another typedef, we love to see it.

👑 Public Member Functions 👑

basic_istringstream () — Default constructor starts with an empty string buffer.
basic_istringstream (__string_type &&__str, ios_base::openmode __mode=ios_base::in) — rvalue string constructor, with __mode defaulting to ios_base::in.
basic_istringstream (basic_istringstream &&__rhs) — move constructor, main character energy.
basic_istringstream (const __string_type &__str, ios_base::openmode __mode=ios_base::in) — Starts with an existing string buffer.
basic_istringstream (const basic_istringstream &)=delete — copy constructor is deleted, bestie. not available.
template<typename _SAlloc> basic_istringstream (const basic_string< _CharT, _Traits, _SAlloc > &__str, const allocator_type &__a) — templated constructor with allocator.
template<typename _SAlloc> basic_istringstream (const basic_string< _CharT, _Traits, _SAlloc > &__str, ios_base::openmode __mode, const allocator_type &__a) — templated constructor with mode and allocator.
template<typename _SAlloc> basic_istringstream (const basic_string< _CharT, _Traits, _SAlloc > &__str, ios_base::openmode __mode=ios_base::in) — templated constructor, mode defaults to ios_base::in.
basic_istringstream (ios_base::openmode __mode) — Starts with an empty string buffer.
basic_istringstream (ios_base::openmode __mode, const allocator_type &__a) — openmode plus allocator constructor.
~basic_istringstream () — The destructor does nothing. iconic, honestly.
template<typename _ValueT> basic_istream< _CharT, _Traits > & _M_extract (_ValueT &__v) — internal extract helper.
const locale & _M_getloc () const — Locale access.
void _M_setstate (iostate __state) — internal state setter.
bool bad () const — Fast error checking.
void clear (iostate __state=goodbit) — [Re]sets the error state.
basic_ios & copyfmt (const basic_ios &__rhs) — Copies fields of __rhs into this.
bool eof () const — Fast error checking.
iostate exceptions () const — Throwing exceptions on errors.
void exceptions (iostate __except) — Throwing exceptions on errors.
bool fail () const — Fast error checking.
char_type fill () const — Retrieves the empty character.
char_type fill (char_type __ch) — Sets a new empty character.
fmtflags flags () const — Access to format flags.
fmtflags flags (fmtflags __fmtfl) — Setting new format flags all at once.
streamsize gcount () const — Character counting.
basic_istream< wchar_t > & getline (char_type *__s, streamsize __n, char_type __delim) — explicit specialization declaration, defined in src/istream.cc.
basic_istream< char > & getline (char_type *__s, streamsize __n, char_type __delim) — Explicit specialization declarations, defined in src/istream.cc.
locale getloc () const — Locale access.
bool good () const — Fast error checking.
basic_istream< wchar_t > & ignore (streamsize __n) — ignore overload, wchar_t flavor.
basic_istream< char > & ignore (streamsize __n) — ignore overload, char flavor.
basic_istream< wchar_t > & ignore (streamsize __n, int_type __delim) — ignore with delimiter, wchar_t flavor.
basic_istream< char > & ignore (streamsize __n, int_type __delim) — ignore with delimiter, char flavor.
locale imbue (const locale &__loc) — Moves to a new locale.
long & iword (int __ix) — Access to integer array.
char narrow (char_type __c, char __dfault) const — Squeezes characters.
basic_istringstream & operator= (basic_istringstream &&__rhs) — move assignment.
basic_istringstream & operator= (const basic_istringstream &)=delete — copy assignment is deleted.
__istream_type & operator>> (__streambuf_type *__sb) — Extracting into another streambuf.
__istream_type & operator>> (void *&__p) — Basic arithmetic extractors.
streamsize precision () const — Flags access.
streamsize precision (streamsize __prec) — Changing flags.
void *& pword (int __ix) — Access to void pointer array.
basic_streambuf< _CharT, _Traits > * rdbuf (basic_streambuf< _CharT, _Traits > *__sb) — Changing the underlying buffer.
__stringbuf_type * rdbuf () const — Accessing the underlying buffer.
iostate rdstate () const — Returns the error state of the stream buffer.
void register_callback (event_callback __fn, int __index) — Add the callback __fn with parameter __index.
fmtflags setf (fmtflags __fmtfl) — Setting new format flags.
fmtflags setf (fmtflags __fmtfl, fmtflags __mask) — Setting new format flags.
void setstate (iostate __state) — Sets additional flags in the error state.
__string_type str () && — rvalue str access.
__string_type str () const & — Copying out the string buffer.
void str (__string_type &&__s) — Setting a new buffer.
void str (const __string_type &__s) — Setting a new buffer.
template<__allocator_like _SAlloc> basic_string< _CharT, _Traits, _SAlloc > str (const _SAlloc &__sa) const — allocator-aware str getter.
template<__allocator_like _SAlloc> void str (const basic_string< _CharT, _Traits, _SAlloc > &__s) — allocator-aware str setter.
void swap (basic_istringstream &__rhs) — swap, bestie.
basic_ostream< _CharT, _Traits > * tie () const — Fetches the current tied stream.
basic_ostream< _CharT, _Traits > * tie (basic_ostream< _CharT, _Traits > *__tiestr) — Ties this stream to an output stream.
void unsetf (fmtflags __mask) — Clearing format flags.
basic_string_view< char_type, traits_type > view () const noexcept — view, no cap.
char_type widen (char __c) const — Widens characters.
streamsize width () const — Flags access.
streamsize width (streamsize __wide) — Changing flags.
__istream_type & operator>> (__istream_type &(*__pf)(__istream_type &)) — Interface for manipulators.
__istream_type & operator>> (__ios_type &(*__pf)(__ios_type &)) — Interface for manipulators.
__istream_type & operator>> (ios_base &(*__pf)(ios_base &)) — Interface for manipulators.

💅 Extractors 💅

All the operator>> functions (aka formatted input functions) have some common behavior. Each starts by constructing a temporary object of type std::basic_istream::sentry with the second argument (noskipws) set to false. This has several effects, concluding with the setting of a status flag; see the sentry documentation for more.

If the sentry status is good, the function tries to extract whatever data is appropriate for the type of the argument.

If an exception is thrown during extraction, ios_base::badbit will be turned on in the stream's error state (without causing an ios_base::failure to be thrown) and the original exception will be rethrown if badbit is set in the exceptions mask.

__istream_type & operator>> (bool &__n) — Integer arithmetic extractors.
__istream_type & operator>> (short &__n) — Integer arithmetic extractors.
__istream_type & operator>> (unsigned short &__n) — Integer arithmetic extractors.
__istream_type & operator>> (int &__n) — Integer arithmetic extractors.
__istream_type & operator>> (unsigned int &__n) — Integer arithmetic extractors.
__istream_type & operator>> (long &__n) — Integer arithmetic extractors.
__istream_type & operator>> (unsigned long &__n) — Integer arithmetic extractors.
__istream_type & operator>> (long long &__n) — Integer arithmetic extractors.
__istream_type & operator>> (unsigned long long &__n) — Integer arithmetic extractors.
__istream_type & operator>> (float &__f) — Floating point arithmetic extractors.
__istream_type & operator>> (double &__f) — Floating point arithmetic extractors.
__istream_type & operator>> (long double &__f) — Floating point arithmetic extractors.

🦋 Unformatted Input Functions 🦋

All the unformatted input functions have some common behavior. Each starts by constructing a temporary object of type std::basic_istream::sentry with the second argument (noskipws) set to true. This has several effects, concluding with the setting of a status flag; see the sentry documentation for more.

If the sentry status is good, the function tries to extract whatever data is appropriate for the type of the argument.

The number of characters extracted is stored for later retrieval by gcount().

If an exception is thrown during extraction, ios_base::badbit will be turned on in the stream's error state (without causing an ios_base::failure to be thrown) and the original exception will be rethrown if badbit is set in the exceptions mask.

int_type get () — simple extraction, no cap 💅
__istream_type & get (char_type &__c) — also simple extraction, but into a char ref 🎀
__istream_type & get (char_type *__s, streamsize __n, char_type __delim) — simple multiple-character extraction, with a delimiter bestie ✨
__istream_type & get (char_type *__s, streamsize __n) — same thing, no delimiter specified 🦋
__istream_type & get (__streambuf_type &__sb, char_type __delim) — extraction straight into another streambuf, delimited 🌸
__istream_type & get (__streambuf_type &__sb) — extraction into another streambuf, plain and simple 💜
__istream_type & getline (char_type *__s, streamsize __n, char_type __delim) — string extraction, delimiter included 🔥
__istream_type & getline (char_type *__s, streamsize __n) — string extraction, default delim energy ⭐
__istream_type & ignore (streamsize __n, int_type __delim) — discarding characters, so iconic 🗑️
__istream_type & ignore (streamsize __n) — simple extraction vibes 😌
__istream_type & ignore () — simple extraction vibes, again 🫶
__istream_type & ignore (streamsize __n, char __delim) — simple extraction vibes, char edition 🍓
int_type peek () — looking ahead in the stream, no touching, just looking 👀
__istream_type & read (char_type *__s, streamsize __n) — extraction without delimiters, she does NOT stop for anyone 💀
streamsize readsome (char_type *__s, streamsize __n) — extraction until the buffer is exhausted, but no more. boundaries, queen 👑
__istream_type & putback (char_type __c) — unextracting a single character, rewinding like it never happened 🙈
__istream_type & unget () — unextracting the previous character, reverse uno 🧚
int sync () — synchronizing the stream buffer ⚡
pos_type tellg () — getting the current read position, where are we bestie 📍
__istream_type & seekg (pos_type) — changing the current read position 🚀
__istream_type & seekg (off_type, ios_base::seekdir) — changing the current read position, but with a direction 🌈
operator bool () const — the quick-and-easy status check ✨
bool operator! () const — the quick-and-easy status check, but the hater version 💅

🌟 Static Public Member Functions 🌟

static bool sync_with_stdio (bool __sync=true) — interaction with the standard C I/O objects 🔗
static int xalloc () throw () — access to unique indices 🎟️

💫 Static Public Attributes 💫

static const openmode __noreplace — yep, it's there 🫧
static const fmtflags adjustfield — a mask of left|right|internal. Useful for the 2-arg form of setf. 🎯
static const openmode app — seek to end before each write 🏃‍♀️
static const openmode ate — open and seek to end immediately after opening 📌
static const iostate badbit — indicates a loss of integrity in an input or output sequence (such as an irrecoverable read error from a file) 😭
static const fmtflags basefield — a mask of dec|oct|hex. Useful for the 2-arg form of setf. 🧮
static const seekdir beg — request a seek relative to the beginning of the stream 🌀
static const openmode binary — perform input and output in binary mode (as opposed to text mode). This is probably not what you think it is; see https://gcc.gnu.org/onlinedocs/libstdc++/manual/fstreams.html#std.io.filestreams.binary ⚠️
static const fmtflags boolalpha — insert/extract bool in alphabetic rather than numeric format 🔤
static const seekdir cur — request a seek relative to the current position within the sequence 📍
static const fmtflags dec — converts integer input or generates integer output in decimal base 🔟
static const seekdir end — request a seek relative to the current end of the sequence 🏁
static const iostate eofbit — indicates that an input operation reached the end of an input sequence 🌅
static const iostate failbit — indicates that an input operation failed to read the expected characters, or that an output operation failed to generate the desired characters 💔
static const fmtflags fixed — generate floating-point output in fixed-point notation 🧷
static const fmtflags floatfield — a mask of scientific|fixed. Useful for the 2-arg form of setf. 🎈
static const iostate goodbit — indicates all is well 🥰
static const fmtflags hex — converts integer input or generates integer output in hexadecimal base 🔡
static const openmode in — open for input. Default for ifstream and fstream. 📥
static const fmtflags internal — adds fill characters at a designated internal point in certain generated output, or identical to right if no such point is designated 🧩
static const fmtflags left — adds fill characters on the right (final positions) of certain generated output. (I.e., the thing you print is flush left.). ⬅️
static const fmtflags oct — converts integer input or generates integer output in octal base 🐙
static const openmode out — open for output. Default for ofstream and fstream. 📤
static const fmtflags right — adds fill characters on the left (initial positions) of certain generated output. (I.e., the thing you print is flush right.). ➡️
static const fmtflags scientific — generates floating-point output in scientific notation 🔬
static const fmtflags showbase — generates a prefix indicating the numeric base of generated integer output 🏷️
static const fmtflags showpoint — generates a decimal-point character unconditionally in generated floating-point output 🎀
static const fmtflags showpos — generates a + sign in non-negative generated numeric output ➕
static const fmtflags skipws — skips leading white space before certain input operations 🫥
static const openmode trunc — truncate an existing stream when opening. Default for ofstream. ✂️
static const fmtflags unitbuf — flushes output after each output operation 🚽
static const fmtflags uppercase — replaces certain lowercase letters with their uppercase equivalents in generated output 🔠

🛡️ Protected Types 🛡️

enum { _S_local_word_size } — the local word size, protected bestie 🫣

🧸 Protected Member Functions 🧸

void _M_cache_locale (const locale &__loc) 🗂️
void _M_call_callbacks (event __ev) throw () 📞
void _M_dispose_callbacks (void) throw () 🗑️
template<typename _ValueT> __istream_type & _M_extract (_ValueT &__v) 🧲
_Words & _M_grow_words (int __index, bool __iword) 🌱
void _M_init () throw () 🌟
void _M_move (ios_base &) noexcept 🚚
void _M_swap (ios_base &__rhs) noexcept 🔄
void init (basic_streambuf< _CharT, _Traits > *__sb) — all setup is performed here 🛠️
void move (basic_ios &&__rhs) 🏃
void move (basic_ios &__rhs) 🏃‍♀️
void set_rdbuf (basic_streambuf< _CharT, _Traits > *__sb) 📎
void swap (basic_ios &__rhs) noexcept 🔁
void swap (basic_istream &__rhs) 🔀

🔒 Protected Attributes 🔒

_Callback_list * _M_callbacks 📋
const __ctype_type * _M_ctype 🔤
iostate _M_exception 🚨
char_type _M_fill 🧴
bool _M_fill_init ✅
fmtflags _M_flags 🚩
streamsize _M_gcount 🔢
locale _M_ios_locale 🌍
_Words _M_local_word [_S_local_word_size] 📚
const __num_get_type * _M_num_get 🔽
const __num_put_type * _M_num_put 🔼
streamsize _M_precision 🎯
basic_streambuf< _CharT, _Traits > * _M_streambuf 🧺
iostate _M_streambuf_state 📊
basic_ostream< _CharT, _Traits > * _M_tie 🎽
streamsize _M_width 📏
_Words * _M_word 📖
int _M_word_size 🔢
_Words _M_word_zero 0️⃣

🌸 Detailed Description 🌸

template<typename _CharT, typename _Traits, typename _Alloc>
    class std::basic_istringstream< _CharT, _Traits, _Alloc >

"Controlling input for std::string." periodt 💖

✨ Template Parameters ✨

_CharT — type of character stream 🔤
_Traits — traits for character type, defaults to char_traits<_CharT>. 🧬
_Alloc — allocator type, defaults to allocator<_CharT>. 🧺

This class supports reading from objects of type std::basic_string, using the inherited functions from std::basic_istream. To control the associated sequence, an instance of std::basic_stringbuf is used, which this page refers to as sb. no cap 🫶

💖 Member Typedef Documentation 💖

`template<typename _CharT, typename _Traits> typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> > std::basic_ios< _CharT, _Traits >::__num_put_type` [inherited]

These are non-standard types 🫣✨

`typedef void(* std::ios_base::event_callback) (event __e, ios_base &b, int i)` [inherited]

The type of an event callback function 📣

Parameters

__e — one of the members of the event enum. 🎪
__b — reference to the ios_base object. 📦
__i — the integer provided when the callback was registered. 🔢

Event callbacks are user defined functions that get called during several ios_base and basic_ios functions, specifically imbue(), copyfmt(), and ~ios(). the way they just show up 😭

`typedef _Ios_Fmtflags std::ios_base::fmtflags` [inherited]

This is a bitmask type. _Ios_Fmtflags is implementation-defined, but it is valid to perform bitwise operations on these values and expect the Right Thing to happen. Defined objects of type fmtflags are:

boolalpha
dec
fixed
hex
internal
left
oct
right
scientific
showbase
showpoint
showpos
skipws
unitbuf
uppercase
adjustfield
basefield
floatfield

`typedef _Ios_Iostate std::ios_base::iostate` [inherited]

This is a bitmask type. _Ios_Iostate is implementation-defined, but it is valid to perform bitwise operations on these values and expect the Right Thing to happen. Defined objects of type iostate are:

badbit
eofbit
failbit
goodbit

`typedef _Ios_Openmode std::ios_base::openmode` [inherited]

This is a bitmask type. _Ios_Openmode is implementation-defined, but it is valid to perform bitwise operations on these values and expect the Right Thing to happen. Defined objects of type openmode are:

app
ate
binary
in
out
trunc

`typedef _Ios_Seekdir std::ios_base::seekdir` [inherited]

This is an enumerated type. _Ios_Seekdir is implementation-defined. Defined values of type seekdir are:

beg
cur, equivalent to SEEK_CUR in the C standard library. 🌀
end, equivalent to SEEK_END in the C standard library. 🏁

🦋 Member Enumeration Documentation 🦋

`enum std::ios_base::event` [inherited]

The set of events that may be passed to an event callback. erase_event is used during ~ios() and copyfmt(). imbue_event is used during imbue(). copyfmt_event is used during copyfmt(). iconic behavior tbh 💅

🌸 Constructor & Destructor Documentation 🌸

bestie it's constructors time, let's GO 🎀

✨ `basic_istringstream()` — the default one, no cap ✨

template<typename _CharT, typename _Traits, typename _Alloc>
    std::basic_istringstream< _CharT, _Traits, _Alloc >::basic_istringstream () [inline]

Default constructor, and it kicks things off with a totally empty string buffer. It initializes sb using in, and passes &sb to the base class initializer. Does not allocate any buffer. 💅

That's a lie. We initialize the base class with NULL, because the string class does its own memory management. 😭 iconic honestly

✨ `basic_istringstream(ios_base::openmode __mode)` — pick your mode ✨

template<typename _CharT, typename _Traits, typename _Alloc>
    std::basic_istringstream< _CharT, _Traits, _Alloc >::basic_istringstream
    (ios_base::openmode __mode) [inline],  [explicit]

Also starts with an empty string buffer, but you get to say how it behaves 🦋

Parameters

__mode — whether the buffer can read, or write, or both.

ios_base::in is automatically included in __mode. Periodt, you don't get a say.

Initializes sb using __mode|in, and passes &sb to the base class initializer. Does not allocate any buffer.

That's a lie. We initialize the base class with NULL, because the string class does its own memory management. 💀 same energy as before

✨ `basic_istringstream(const __string_type & __str, ios_base::openmode __mode = ios_base::in)` — bring your own string ✨

template<typename _CharT, typename _Traits, typename _Alloc>
    std::basic_istringstream< _CharT, _Traits, _Alloc >::basic_istringstream
    (const __string_type & __str, ios_base::openmode __mode = ios_base::in)
    [inline],  [explicit]

Now THIS one starts with an existing string buffer. main character energy 🌟

Parameters

__str — a string to copy as a starting buffer.
__mode — whether the buffer can read, or write, or both.

ios_base::in is automatically included in mode. (yes, mode — that's what the docs say, we don't make the rules 🙈)

Initializes sb using str and mode|in, and passes &sb to the base class initializer.

That's a lie. We initialize the base class with NULL, because the string class does its own memory management. 🍓 the trio of lies is complete

✨ `~basic_istringstream()` — the destructor, she does nothing ✨

template<typename _CharT, typename _Traits, typename _Alloc>
    std::basic_istringstream< _CharT, _Traits, _Alloc
    >::~basic_istringstream () [inline]

The destructor does nothing. Zero. Nada. The buffer is deallocated by the stringbuf object, not the formatting stream. she's just here for the vibes 😌

💖 Member Function Documentation 💖

okay this is the big one, buckle up bestie, we're going through every single function fr fr 🧚

🌈 `std::ios_base::_M_getloc()` — locale access 🌈

const locale & std::ios_base::_M_getloc () const [inline],  [inherited]

Returns

A reference to the current locale.

Like getloc above, but returns a reference instead of generating a copy. lowkey efficient of her ✨

Referenced by:

std::money_get< _CharT, _InIter >::do_get()
std::num_get< _CharT, _InIter >::do_get()
std::time_get< _CharT, _InIter >::do_get()
std::time_get< _CharT, _InIter >::do_get_date()
std::time_get< _CharT, _InIter >::do_get_monthname()
std::time_get< _CharT, _InIter >::do_get_time()
std::time_get< _CharT, _InIter >::do_get_weekday()
std::time_get< _CharT, _InIter >::do_get_year()
std::num_put< _CharT, _OutIter >::do_put()
std::time_put< _CharT, _OutIter >::do_put()
std::time_get< _CharT, _InIter >::get()
and std::time_put< _CharT, _OutIter >::put()

🌈 `bad()` — fast error checking 🌈

template<typename _CharT, typename _Traits> bool std::basic_ios< _CharT,
    _Traits >::bad () const [inline],  [nodiscard],  [inherited]

Fast error checking, she's quick 💨

Returns

True if the badbit is set.

Note that other iostate flags may also be set. so like, don't assume it's only badbit, ok? 👀

Referenced by: std::basic_ostream< _CharT, _Traits >::sentry::sentry().

🌈 `clear(iostate __state = goodbit)` — [Re]sets the error state 🌈

template<typename _CharT, typename _Traits> void std::basic_ios< _CharT,
    _Traits >::clear (iostate __state = goodbit) [inherited]

[Re]sets the error state. the brackets are doing a lot of work there and I respect it 💅

Parameters

__state — the new state flag(s) to set.

See std::ios_base::iostate for the possible bit values. Most users will not need to pass an argument. (if that's you, you're valid 🫶)

References: std::ios_base::badbit, exceptions(), rdbuf(), and rdstate().

Referenced by:

std::basic_ios< char_type, traits_type >::exceptions()
std::basic_fstream< char >::open()
std::basic_fstream< char >::open()
std::basic_ifstream< char >::open()
std::basic_ifstream< char >::open()
std::basic_ofstream< char >::open()
std::basic_ofstream< char >::open()
std::__detail::operator>>()
std::basic_istream< _CharT, _Traits >::putback()
rdbuf()
std::basic_istream< _CharT, _Traits >::seekg()
std::basic_istream< _CharT, _Traits >::seekg()
std::basic_ios< char_type, traits_type >::setstate()
and std::basic_istream< _CharT, _Traits >::unget()

🌈 `copyfmt()` — copies fields of `__rhs` into this 🌈

template<typename _CharT, typename _Traits> basic_ios< _CharT, _Traits > &
    std::basic_ios< _CharT, _Traits >::copyfmt (const basic_ios< _CharT,
    _Traits > & __rhs) [inherited]

Copies fields of __rhs into this. it's giving "becoming your friend" 🌸

Parameters

__rhs — the source values for the copies.

Returns

Reference to this object.

All fields of __rhs are copied into this object except that rdbuf() and rdstate() remain unchanged. All values in the pword and iword arrays are copied. Before copying, each callback is invoked with erase_event. After copying, each (new) callback is invoked with copyfmt_event. The final step is to copy exceptions(). the order MATTERS bestie, don't skip steps 🔥

References: basic_ios(), std::__addressof(), exceptions(), fill(), std::ios_base::flags(), std::ios_base::getloc(), std::ios_base::precision(), tie(), std::tie(), and std::ios_base::width().

🌈 `eof()` — fast error checking again 🌈

template<typename _CharT, typename _Traits> bool std::basic_ios< _CharT,
    _Traits >::eof () const [inline],  [nodiscard],  [inherited]

Fast error checking. ⚡

Returns

True if the eofbit is set.

Note that other iostate flags may also be set. same disclaimer, every time, iconic consistency 💀

🌈 `exceptions()` const — the getter 🌈

template<typename _CharT, typename _Traits> iostate std::basic_ios< _CharT,
    _Traits >::exceptions () const [inline],  [nodiscard],  [inherited]

Throwing exceptions on errors. 😤

Returns

The current exceptions mask.

This changes nothing in the stream. See the one-argument version of exceptions(iostate) for the meaning of the return value.

Referenced by: clear(), and copyfmt().

🌈 `exceptions(iostate __except)` — the setter, and she's dramatic 🌈

template<typename _CharT, typename _Traits> void std::basic_ios< _CharT,
    _Traits >::exceptions (iostate __except) [inline],  [inherited]

Throwing exceptions on errors.

Parameters

__except — the new exceptions mask.

By default, error flags are set silently. You can set an exceptions mask for each stream; if a bit in the mask becomes set in the error flags, then an exception of type std::ios_base::failure is thrown. 🔥

If the error flag is already set when the exceptions mask is added, the exception is immediately thrown. Try running the following under GCC 3.1 or later:

#include <iostream>
#include <fstream>
#include <exception>

int main()
{
    std::set_terminate (__gnu_cxx::__verbose_terminate_handler);

    std::ifstream f ("/etc/motd");

    std::cerr << "Setting badbit\n";
    f.setstate (std::ios_base::badbit);

    std::cerr << "Setting exception mask\n";
    f.exceptions (std::ios_base::badbit);
}

bestie run this and watch the chaos unfold, it's giving cinema 😭

🌈 `fail()` — fast error checking, the remix 🌈

template<typename _CharT, typename _Traits> bool std::basic_ios< _CharT,
    _Traits >::fail () const [inline],  [nodiscard],  [inherited]

Fast error checking. ⚡⚡

Returns

True if either the badbit or the failbit is set.

Checking the badbit in fail() is historical practice. Note that other iostate flags may also be set. yes we know, we've heard it before, but it's true every time 🫶

Referenced by:

std::basic_ios< char_type, traits_type >::operator bool()
std::basic_ios< char_type, traits_type >::operator!()
std::basic_istream< _CharT, _Traits >::seekg()
std::basic_istream< _CharT, _Traits >::seekg()
std::basic_ostream< _CharT, _Traits >::seekp()
std::basic_ostream< _CharT, _Traits >::seekp()
std::basic_istream< _CharT, _Traits >::tellg()
and std::basic_ostream< _CharT, _Traits >::tellp()

🌈 `fill()` const — retrieves the empty character 🌈

template<typename _CharT, typename _Traits> char_type std::basic_ios<
    _CharT, _Traits >::fill () const [inline],  [nodiscard],  [inherited]

Retrieves the empty character. 🌸

Returns

The current fill character.

It defaults to a space (' ') in the current locale. the humble space, doing so much for us 💅

Referenced by: copyfmt(), and std::philox_engine< uint_fast32_t, 32, 4, 10, 0xCD9E8D57, 0x9E3779B9, 0xD2511F53, 0xBB67AE85 >::operator<<.

🌈 `fill(char_type __ch)` — sets a new empty character 🌈

template<typename _CharT, typename _Traits> char_type std::basic_ios<
    _CharT, _Traits >::fill (char_type __ch) [inline],  [inherited]

Sets a new empty character.

Parameters

__ch — the new character.

Returns

The previous fill character.

The fill character is used to fill out space when P+ characters have been requested (e.g., via setw), Q characters are actually used, and Q<P. It defaults to a space (' ') in the current locale. math girlies rise, Q<P is a whole inequality 🧮✨

🌈 `std::ios_base::flags()` const — access to format flags 🌈

fmtflags std::ios_base::flags () const [inline],  [nodiscard],  [inherited]

Access to format flags.

Returns

The format control flags for both input and output.

Referenced by:

std::basic_ios< _CharT, _Traits >::copyfmt()
std::num_get< _CharT, _InIter >::do_get()
std::num_get< _CharT, _InIter >::do_get()
std::num_put< _CharT, _OutIter >::do_put()
std::num_put< _CharT, _OutIter >::do_put()
std::chrono::operator<<()
std::philox_engine< uint_fast32_t, 32, 4, 10, 0xCD9E8D57, 0x9E3779B9, 0xD2511F53, 0xBB67AE85 >::operator<<
std::__detail::operator>>()
std::operator>>()
std::operator>>()
std::operator>>()
std::operator>>()
std::operator>>()
std::operator>>()
std::operator>>()
and std::philox_engine< uint_fast32_t, 32, 4, 10, 0xCD9E8D57, 0x9E3779B9, 0xD2511F53, 0xBB67AE85 >::operator>>

🌈 `std::ios_base::flags(fmtflags __fmtfl)` — setting new format flags all at once 🌈

fmtflags std::ios_base::flags (fmtflags __fmtfl) [inline],  [inherited]

Setting new format flags all at once. go big or go home 🔥

Parameters

__fmtfl — the new flags to set.

Returns

The previous format control flags.

This function overwrites all the format flags with __fmtfl. not a merge, an overwrite. she does not share the spotlight 💅

🌈 `gcount()` — character counting 🌈

template<typename _CharT, typename _Traits> streamsize std::basic_istream<
    _CharT, _Traits >::gcount () const [inline],  [inherited]

Character counting. 🔢

Returns

The number of characters extracted by the previous unformatted input function dispatched for this stream.

🌈 `get(void)` — simple extraction 🌈

template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits
    >::int_type std::basic_istream< _CharT, _Traits >::get (void )
    [inherited]

Simple extraction. keep it simple, bestie ✨

Returns

A character, or eof().

Tries to extract a character. If none are available, sets failbit and returns traits::eof(). 🫠

References: _M_gcount, std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::failbit, std::ios_base::goodbit, std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_ios< _CharT, _Traits >::setstate().

Referenced by: std::basic_istream< char_type, traits_type >::get(), and std::basic_istream< char_type, traits_type >::get().

🌈 `get(__streambuf_type & __sb)` — extraction into another streambuf 🌈

template<typename _CharT, typename _Traits> __istream_type &
    std::basic_istream< _CharT, _Traits >::get (__streambuf_type & __sb)
    [inline],  [inherited]

Extraction into another streambuf. 🦋

Parameters

__sb — a streambuf in which to store data.

Returns

*this

Returns get(__sb,widen('\n')). that's it, that's the whole function, she's a shortcut queen 💅

🌈 `get(__streambuf_type & __sb, char_type __delim)` — extraction into another streambuf, now with a stop character 🌈

template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits >
    & std::basic_istream< _CharT, _Traits >::get (__streambuf_type & __sb,
    char_type __delim) [inherited]

Extraction into another streambuf, but this time you get to say when to stop 🛑

Parameters

__sb — a streambuf in which to store data.
__delim — a "stop" character.

Characters get extracted and yeeted into __sb until one of these things pops off:

the input sequence hits EOF 💀
inserting into the output buffer fails (and in that case, the character that would have been inserted is not extracted — she stays right where she is, bestie)
the next character equals __delim (and nope, that character is not extracted either)
an exception occurs (and in this case it is caught, so we move on gracefully 💅)

If zero characters get stored, failbit is set in the stream's error state. 😭

References _M_gcount, std::ios_base::goodbit, std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_streambuf< _CharT, _Traits >::sgetc().

🍓 `template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::get (char_type & __c)` [inherited]

Simple extraction. One little guy. That's it. ✨

Parameters

__c — the character in which to store data. That's where she goes.

Returns

*this

Tries to extract a character and store it in __c. If none are available, it sets failbit and returns traits::eof(). Iconic sad-girl behavior, but that's the spec.

Note — This function is not overloaded on signed char and unsigned char. Noted, no cap.

References _M_gcount, std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::failbit, std::ios_base::goodbit, std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_ios< _CharT, _Traits >::setstate().

🌸 `template<typename _CharT, typename _Traits> __istream_type & std::basic_istream< _CharT, _Traits >::get (char_type * s, streamsize n)` [inline], [inherited]

Simple multiple-character extraction. Glow-up from the single-char version. 💖

Parameters

__s — pointer to an array.
__n — maximum number of characters to store in s.

Returns

*this

Returns get(__s,__n,widen('\n')). She's literally just forwarding the call, and honestly? Relatable.

🦋 `template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::get (char_type * s, streamsize n, char_type __delim)` [inherited]

Simple multiple-character extraction, but make it deluxe.

Parameters

__s — pointer to an array.
__n — maximum number of characters to store in __s.
__delim — a "stop" character.

Returns

*this

Characters are extracted and stored into __s until one of the following happens:

__n-1 characters are stored
the input sequence reaches EOF
the next character equals __delim, in which case the character is not extracted

If no characters are stored, failbit is set in the stream's error state. 😔

In any case, a null character is stored into the next location in the array. Periodt.

Note — This function is not overloaded on signed char and unsigned char.

References _M_gcount, std::ios_base::goodbit, std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_streambuf< _CharT, _Traits >::sgetc().

🎀 `template<typename _CharT, typename _Traits> __istream_type & std::basic_istream< _CharT, _Traits >::getline (char_type * s, streamsize n)` [inline], [inherited]

String extraction. The main character of every while (std::getline(...)) loop ever. 👑

Parameters

__s — a character array in which to store the data.
__n — maximum number of characters to extract.

Returns

*this

Returns getline(__s,__n,widen('\n')).

💜 `basic_istream< char > & std::basic_istream< char >::getline (char_type * s, streamsize n, char_type __delim)` [inherited]

Explicit specialization declarations, defined in src/istream.cc.

Yes bestie, the real implementation lives in a .cc file. The header was just the trailer.

✨ `template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::getline (char_type * s, streamsize n, char_type __delim)` [inherited]

String extraction. The real one. Let's get into it.

Parameters

__s — a character array in which to store the data.
__n — maximum number of characters to extract.
__delim — a "stop" character.

Returns

*this

Extracts and stores characters into __s until one of the following happens. Note that these criteria are required to be tested in the order listed here, to allow an input line to exactly fill the __s array without setting failbit. The order is not a vibe, it's a requirement. 🫶

the input sequence reaches end-of-file, in which case eofbit is set in the stream error state
the next character equals __delim, in which case the character is extracted (and therefore counted in gcount()) but not stored
__n-1 characters are stored, in which case failbit is set in the stream error state

If no characters are extracted, failbit is set. (An empty line of input should therefore not cause failbit to be set.) 🙈

In any case, a null character is stored in the next location in the array.

Referenced by std::basic_istream< char_type, traits_type >::getline().

🌈 `locale std::ios_base::getloc () const` [inline], [nodiscard], [inherited]

Locale access. The [nodiscard] is watching you — do not ignore her return value.

Returns

A copy of the current locale.

If imbue(loc) has previously been called, then this function returns loc. Otherwise, it returns a copy of std::locale(), the global C++ locale.

Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::money_put< _CharT, _OutIter >::do_put(), std::basic_ios< _CharT, _Traits >::imbue(), std::chrono::operator<<(), std::operator>>(), std::operator>>(), and std::ws().

💖 `template<typename _CharT, typename _Traits> bool std::basic_ios< _CharT, _Traits >::good () const` [inline], [nodiscard], [inherited]

Fast error checking. The vibe check function. 💅

Returns

True if no error flags are set.

A wrapper around rdstate.

Referenced by std::basic_istream< _CharT, _Traits >::sentry::sentry(), std::basic_ostream< _CharT, _Traits >::sentry::sentry(), and std::__detail::operator>>().

🧚 `template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::ignore (void )` [inherited]

Simple extraction. Ignore her, she's busy ignoring characters.

Returns

A character, or eof().

Tries to extract a character. If none are available, sets failbit and returns traits::eof().

References _M_gcount, std::ios_base::eofbit, std::ios_base::goodbit, std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_streambuf< _CharT, _Traits >::sbumpc().

Referenced by std::basic_istream< char_type, traits_type >::ignore().

🍓 `template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::ignore (streamsize __n)` [inherited]

Simple extraction. Same energy, new argument. ✨

Returns

A character, or eof().

Tries to extract a character. If none are available, sets failbit and returns traits::eof().

References _M_gcount, std::ios_base::goodbit, std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_streambuf< _CharT, _Traits >::sgetc().

🎀 `template<typename _CharT, typename _Traits> __istream_type & std::basic_istream< _CharT, _Traits >::ignore (streamsize n, char delim)` [inline], [inherited]

Simple extraction. Yes, the docs really do repeat this three times. We're keeping it fr fr.

Returns

A character, or eof().

Tries to extract a character. If none are available, sets failbit and returns traits::eof().

💜 `template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::ignore (streamsize __n, int_type __delim)` [inherited]

Discarding characters. The actual ignore. 🗑️

Parameters

__n — number of characters to discard.
__delim — a "stop" character.

Returns

*this

Extracts characters and throws them away until one of the following happens:

if __n != std::numeric_limits<int>::max(), __n characters are extracted
the input sequence reaches end-of-file
the next character equals __delim (in this case, the character is extracted); note that this condition will never occur if __delim equals traits::eof()

NB: Provide four overloads, instead of the single function (with defaults) mandated by the Standard: this leads to a better performing implementation, while still conforming to the Standard. She's doing extra credit and still following the syllabus. Queen behavior. 👑

References _M_gcount, and std::ios_base::goodbit.

🌸 `template<typename _CharT, typename _Traits> locale std::basic_ios< _CharT, _Traits >::imbue (const locale & __loc)` [inherited]

Moves to a new locale. Locale glow-up. 🌍

Parameters

__loc — the new locale.

Returns

The previous locale.

Calls ios_base::imbue(loc), and if a stream buffer is associated with this stream, calls that buffer's pubimbue(loc).

Additional l10n notes are at https://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html

References std::ios_base::getloc(), std::ios_base::imbue(), and rdbuf().

Referenced by std::chrono::operator<<().

🦋 `template<typename _CharT, typename _Traits> void std::basic_ios< _CharT, _Traits >::init (basic_streambuf< _CharT, _Traits > * __sb)` [protected], [inherited]

All setup is performed here. This is called from the public constructor. It is not virtual and cannot be redefined. Don't even try it bestie, she's locked. 🔒

Referenced by std::basic_fstream< char >::basic_fstream(), std::basic_fstream< char >::basic_fstream(), std::basic_fstream< char >::basic_fstream(), std::basic_ifstream< char >::basic_ifstream(), std::basic_ifstream< char >::basic_ifstream(), std::basic_ifstream< char >::basic_ifstream(), std::basic_ios< char_type, traits_type >::basic_ios(), std::basic_istream< char_type, traits_type >::basic_istream(), std::basic_istringstream< char >::basic_istringstream(), std::basic_istringstream< char >::basic_istringstream(), std::basic_istringstream< char >::basic_istringstream(), std::basic_ofstream< char >::basic_ofstream(), std::basic_ofstream< char >::basic_ofstream(), std::basic_ofstream< char >::basic_ofstream(), std::basic_ostream< char_type, traits_type >::basic_ostream(), std::basic_ostringstream< char >::basic_ostringstream(), std::basic_ostringstream< char >::basic_ostringstream(), std::basic_ostringstream< char >::basic_ostringstream(), std::basic_stringstream< char >::basic_stringstream(), std::basic_stringstream< char >::basic_stringstream(), and std::basic_stringstream< char >::basic_stringstream().

That list? Everyone pulls up to init. It's giving main character energy for a protected function, honestly.

🎀 `long & std::ios_base::iword (int __ix)` [inline], [inherited]

Access to integer array. Your own lil' scratch space.

Parameters

__ix — index into the array.

Returns

A reference to an integer associated with the index.

The iword function provides access to an array of integers that can be used for any purpose. The array grows as required to hold the supplied index. All integers in the array are initialized to 0.

The implementation reserves several indices. You should use xalloc to obtain an index that is safe to use. Also note that since the array can grow dynamically, it is not safe to hold onto the reference. 🙅‍♀️ Don't clutch it, bestie, she may move.

References iword().

Referenced by iword().

💖 `template<typename _CharT, typename _Traits> char std::basic_ios< _CharT, _Traits >::narrow (char_type c, char dfault) const` [inline], [inherited]

Squeezes characters. Compression but for character types. 🫶

Parameters

__c — the character to narrow.
__dfault — the character to narrow.

Returns

The narrowed character.

Maps a character of char_type to a character of char, if possible. ✨

Returns the result of

std::use_facet<ctype<char_type> >(getloc()).narrow(c,dfault)

Additional l10n notes are at https://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html 🌍

`operator bool ()` — the vibe check for your stream 💅

template<typename _CharT, typename _Traits>
std::basic_ios<_CharT, _Traits>::operator bool () const

[inline], [explicit], [nodiscard], [inherited]

Bestie, this is the quick-and-easy status check. It's literally the "are you okay??" text you send at 2am. It lets you write stuff like if (!a_stream) ... and while (a_stream) ... — no cap. ✨

`operator! ()` — the other vibe check 🦋

template<typename _CharT, typename _Traits>
bool std::basic_ios<_CharT, _Traits>::operator! () const

[inline], [nodiscard], [inherited]

Again: the quick-and-easy status check. Same energy, opposite sign. Lets you write if (!a_stream) ... and while (a_stream) .... That's it, that's the whole thing. 💖

🎀 `operator>>` overloads — the extractor era

`operator>> (__ios_type &(*pf)(ios_type &))` — manipulator interface 🧚

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(__ios_type& (*__pf)(__ios_type&))

[inline], [inherited]

It's the interface for manipulators. Manipulators like std::ws and std::dec use these functions in constructs like std::cin >> std::ws. Want the lore? Go look at the iomanip header. 👑

`operator>> (__istream_type &(*pf)(istream_type &))` — manipulator interface, the sequel 🌸

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(__istream_type& (*__pf)(__istream_type&))

[inline], [inherited]

Interface for manipulators. Manipulators such as std::ws and std::dec use these functions in constructs like std::cin >> std::ws. For more information, see the iomanip header. 💅

`operator>> (__streambuf_type *__sb)` — extracting into another streambuf 💀

template<typename _CharT, typename _Traits>
basic_istream<_CharT, _Traits>&
std::basic_istream<_CharT, _Traits>::operator>>(__streambuf_type* __sb)

[inherited]

Extracting into another streambuf. Yes bestie, into a whole other streambuf, it's giving multitasking. 😭

Parameters

__sb — a pointer to a streambuf.

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If __sb is NULL, the stream will set failbit in its error state. Not the vibe. 🙈

Characters are extracted from this stream and inserted into the __sb streambuf until one of the following occurs:

the input stream reaches end-of-file,
insertion into the output buffer fails (in this case, the character that would have been inserted is not extracted), or
an exception occurs (and in this case is caught).

If the function inserts no characters, failbit is set.

References std::ios_base::eofbit, std::ios_base::failbit, std::ios_base::goodbit, std::basic_ios<_CharT, _Traits>::rdbuf(), and std::basic_ios<_CharT, _Traits>::setstate().

`operator>> (bool &__n)` — integer arithmetic extractors 🔥

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(bool& __n)

[inline], [inherited]

Integer arithmetic extractors.

Parameters

__n — a variable of builtin integral type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data. Periodt. ✨

`operator>> (double &__f)` — floating point arithmetic extractors 🦋

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(double& __f)

[inline], [inherited]

Floating point arithmetic extractors.

Parameters

__f — a variable of builtin floating point type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data. 🍓

`operator>> (float &__f)` — floating point arithmetic extractors (yes, again) 🌈

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(float& __f)

[inline], [inherited]

Floating point arithmetic extractors.

Parameters

__f — a variable of builtin floating point type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data. 💜

`operator>> (int &__n)` — integer arithmetic extractors 💖

template<typename _CharT, typename _Traits>
basic_istream<_CharT, _Traits>&
std::basic_istream<_CharT, _Traits>::operator>>(int& __n)

[inherited]

Integer arithmetic extractors.

Parameters

__n — a variable of builtin integral type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data. 🎀

`operator>> (ios_base &(*__pf)(ios_base &))` — manipulator interface again 🧚

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(ios_base& (*__pf)(ios_base&))

[inline], [inherited]

Interface for manipulators. Manipulators such as std::ws and std::dec use these functions in constructs like std::cin >> std::ws. For more information, see the iomanip header. 👑

`operator>> (long &__n)` — integer arithmetic extractors 🌸

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(long& __n)

[inline], [inherited]

Integer arithmetic extractors.

Parameters

__n — a variable of builtin integral type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data. 💅

`operator>> (long double &__f)` — floating point arithmetic extractors ✨

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(long double& __f)

[inline], [inherited]

Floating point arithmetic extractors.

Parameters

__f — a variable of builtin floating point type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data. 🦋

`operator>> (long long &__n)` — integer arithmetic extractors 🔥

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(long long& __n)

[inline], [inherited]

Integer arithmetic extractors.

Parameters

__n — a variable of builtin integral type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data. 🌈

`operator>> (short &__n)` — integer arithmetic extractors 🎀

template<typename _CharT, typename _Traits>
basic_istream<_CharT, _Traits>&
std::basic_istream<_CharT, _Traits>::operator>>(short& __n)

[inherited]

Integer arithmetic extractors.

Parameters

__n — a variable of builtin integral type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data.

References std::ios_base::badbit, std::ios_base::failbit, std::num_get<_CharT, _InIter>::get(), std::ios_base::goodbit, std::basic_ios<_CharT, _Traits>::setstate(), and std::use_facet(). 💜

`operator>> (unsigned int &__n)` — integer arithmetic extractors 💖

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(unsigned int& __n)

[inline], [inherited]

Integer arithmetic extractors.

Parameters

__n — a variable of builtin integral type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data. 🧚

`operator>> (unsigned long &__n)` — integer arithmetic extractors 🌸

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(unsigned long& __n)

[inline], [inherited]

Integer arithmetic extractors.

Parameters

__n — a variable of builtin integral type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data. ✨

`operator>> (unsigned long long &__n)` — integer arithmetic extractors 👑

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(unsigned long long& __n)

[inline], [inherited]

Integer arithmetic extractors.

Parameters

__n — a variable of builtin integral type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data. 💅

`operator>> (unsigned short &__n)` — integer arithmetic extractors 🍓

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(unsigned short& __n)

[inline], [inherited]

Integer arithmetic extractors.

Parameters

__n — a variable of builtin integral type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data. 🦋

`operator>> (void *&__p)` — basic arithmetic extractors 💀

template<typename _CharT, typename _Traits>
__istream_type&
std::basic_istream<_CharT, _Traits>::operator>>(void*& __p)

[inline], [inherited]

Basic arithmetic extractors.

Parameters

__p — a variable of pointer type.

Returns

*this if successful.

These functions use the stream's current locale (specifically, the num_get facet) to parse the input data. 🌈

`peek (void )` — looking ahead in the stream 👀

template<typename _CharT, typename _Traits>
basic_istream<_CharT, _Traits>::int_type
std::basic_istream<_CharT, _Traits>::peek(void)

[inherited]

Looking ahead in the stream. Like peeking at the group chat before you type, bestie. 🙈

Returns

The next character, or eof().

If, after constructing the sentry object, good() is false, returns traits::eof(). Otherwise reads but does not extract the next input character.

References _M_gcount, std::ios_base::goodbit, and std::basic_ios<_CharT, _Traits>::rdbuf().

`precision () const` — flags access ✨

streamsize std::ios_base::precision() const

[inline], [nodiscard], [inherited]

Flags access.

Returns

The precision to generate on certain output operations.

Be careful if you try to give a definition of precision here; see DR 189. Lowkey a trap. 💀

Referenced by std::basic_ios<_CharT, _Traits>::copyfmt(), and std::chrono::operator<<().

`precision (streamsize __prec)` — changing flags 🎀

streamsize std::ios_base::precision(streamsize __prec)

[inline], [inherited]

Changing flags.

Parameters

__prec — the new precision value.

Returns

The previous value of precision().

`putback (char_type __c)` — unextracting a single character 😭

template<typename _CharT, typename _Traits>
basic_istream<_CharT, _Traits>&
std::basic_istream<_CharT, _Traits>::putback(char_type __c)

[inherited]

Unextracting a single character. The un-eat. The anti-snack. Put it back where you found it. 💅

Parameters

__c — the character to push back into the input stream.

Returns

*this.

If rdbuf() is not null, calls rdbuf()->sputbackc(c).

If rdbuf() is null or if sputbackc() fails, sets badbit in the error state.

Note — This function first clears eofbit. Since no characters are extracted, the next call to gcount() will return 0, as required by DR 60. Fr fr, zero. 🫶

References _M_gcount, std::ios_base::badbit, std::basic_ios<_CharT, _Traits>::clear(), std::ios_base::eofbit, std::ios_base::goodbit, std::basic_ios<_CharT, _Traits>::rdbuf(), std::basic_ios<_CharT, _Traits>::rdstate(), std::basic_ios<_CharT, _Traits>::setstate(), and std::basic_streambuf<_CharT, _Traits>::sputbackc().

Referenced by std::operator<<().

`pword (int __ix)` — access to void pointer array 🌟

void*& std::ios_base::pword(int __ix)

[inline], [inherited]

Access to void pointer array.

Parameters

__ix — index into the array.

Returns

A reference to a void* associated with the index.

The pword function provides access to an array of pointers that can be used for any purpose. The array grows as required to hold the supplied index. All pointers in the array are initialized to 0. Iconic, honestly. 💖

okay bestie, quick heads-up before we keep rolling 💖 — the implementation reserves several indices for itself, so if you want an index that's actually safe to use, you gotta grab one with xalloc. And also, real talk: since that array can grow dynamically, it is not safe to hold onto the reference. let it go, bestie. 🙈

🔄 `rdbuf` — the setter version

template<typename _CharT, typename _Traits> basic_streambuf<_CharT, _Traits>* std::basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<_CharT, _Traits>* __sb) [inherited]

Changing the underlying buffer. glowy new buffer, who dis ✨

Parameters

__sb — the new stream buffer.

Returns

the previous stream buffer.

So basically: it associates a new buffer with the current stream, and clears the error state. two birds, one slay.

Now here's the messy part, and I need you to sit with me: due to historical accidents which the LWG refuses to correct 😭, the I/O library suffers from a design error — this function is hidden in derived classes by overrides of the zero-argument rdbuf(), which is non-virtual for hysterical raisins. As a result, you must use explicit qualifications to access this function via any derived class. Like so:

std::fstream     foo;         // or some other derived type
std::streambuf*  p = .....;

foo.ios::rdbuf(p);            // ios == basic_ios<char>

References clear().

🎀 `rdbuf()` — the getter version (istringstream edition)

template<typename _CharT, typename _Traits, typename _Alloc> __stringbuf_type* std::basic_istringstream<_CharT, _Traits, _Alloc>::rdbuf() const [inline], [nodiscard]

Accessing the underlying buffer.

Returns

the current basic_stringbuf buffer.

Notably, this one hides both signatures of std::basic_ios::rdbuf(). the audacity, honestly 🫣

🧠 `rdstate`

template<typename _CharT, typename _Traits> iostate std::basic_ios<_CharT, _Traits>::rdstate() const [inline], [nodiscard], [inherited]

Returns the error state of the stream buffer.

Returns

a bit pattern (well, isn't everything? 💅)

See std::ios_base::iostate for the possible bit values. Most users will just call one of the interpreting wrappers instead, e.g. good().

Referenced by std::basic_ios<char_type, traits_type>::bad(), clear(), std::basic_ios<char_type, traits_type>::eof(), std::basic_ios<char_type, traits_type>::fail(), std::basic_ios<char_type, traits_type>::good(), std::basic_istream<_CharT, _Traits>::putback(), std::basic_istream<_CharT, _Traits>::seekg(), std::basic_istream<_CharT, _Traits>::seekg(), std::basic_ios<char_type, traits_type>::setstate(), and std::basic_istream<_CharT, _Traits>::unget().

📥 `read`

template<typename _CharT, typename _Traits> basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::read(char_type* __s, streamsize __n) [inherited]

Extraction without delimiters. no commas, no whitespace-skipping, just vibes and characters.

Parameters

__s — a character array.
__n — maximum number of characters to store.

Returns

*this

If the stream state is good(), it extracts characters and stores them into __s until one of these happens:

__n characters are stored
the input sequence reaches end-of-file, in which case the error state is set to failbit|eofbit.

Note: this function is not overloaded on signed char and unsigned char. just so you know, bestie 🫶

References _M_gcount, std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::failbit, std::ios_base::goodbit, std::basic_ios<_CharT, _Traits>::rdbuf(), and std::basic_ios<_CharT, _Traits>::setstate().

🥄 `readsome`

template<typename _CharT, typename _Traits> streamsize std::basic_istream<_CharT, _Traits>::readsome(char_type* __s, streamsize __n) [inherited]

Extraction until the buffer is exhausted, but no more. it's giving "eat what's on your plate, don't go back for seconds" 🍓

Parameters

__s — a character array.
__n — maximum number of characters to store.

Returns

the number of characters extracted.

Extracts characters and stores them into __s depending on the number of characters remaining in the streambuf's buffer, rdbuf()->in_avail(), called A here:

if A == -1, sets eofbit and extracts no characters
if A == 0, extracts no characters
if A > 0, extracts min(A,n)

The goal here is to empty the current buffer, and to not request any more from the external input sequence controlled by the streambuf.

References _M_gcount, std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::goodbit, std::min(), std::basic_ios<_CharT, _Traits>::rdbuf(), and std::basic_ios<_CharT, _Traits>::setstate().

📞 `register_callback`

void std::ios_base::register_callback(event_callback __fn, int __index) [inherited]

Add the callback __fn with parameter __index.

Parameters

__fn — the function to add.
__index — the integer to pass to the function when invoked.

Registers a function as an event callback with an integer parameter that gets passed to the function when it's invoked. Multiple copies of the function are allowed. And if there are multiple callbacks? They're invoked in the order they were registered. first come, first served, periodt. 💅

⏪ `seekg` (the offset + direction one)

template<typename _CharT, typename _Traits> basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::seekg(off_type __off, ios_base::seekdir __dir) [inherited]

Changing the current read position. time travel, but for your stream 🦋

Parameters

__off — a file offset object.
__dir — the direction in which to seek.

Returns

*this

If fail() is not true, it calls rdbuf()->pubseekoff(__off,__dir). If that function fails, it sets failbit.

Note: this function first clears eofbit. It does not count the number of characters extracted, if any, and therefore does not affect the next call to gcount().

References std::ios_base::badbit, std::basic_ios<_CharT, _Traits>::clear(), std::ios_base::eofbit, std::basic_ios<_CharT, _Traits>::fail(), std::ios_base::failbit, std::ios_base::goodbit, std::ios_base::in, std::basic_ios<_CharT, _Traits>::rdbuf(), std::basic_ios<_CharT, _Traits>::rdstate(), and std::basic_ios<_CharT, _Traits>::setstate().

⏩ `seekg` (the position one)

template<typename _CharT, typename _Traits> basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::seekg(pos_type __pos) [inherited]

Changing the current read position.

Parameters

__pos — a file position object.

Returns

*this

If fail() is not true, it calls rdbuf()->pubseekpos(__pos). If that function fails, it sets failbit.

Note: again, this function first clears eofbit. It does not count the number of characters extracted, if any, and therefore does not affect the next call to gcount().

🎛️ `setf` (one argument)

fmtflags std::ios_base::setf(fmtflags __fmtfl) [inline], [inherited]

Setting new format flags.

Parameters

__fmtfl — additional flags to set.

Returns

the previous format control flags.

This function sets additional flags in format control. Flags that were previously set remain set — nobody's getting un-set here.

Referenced by std::__detail::operator>>().

🎛️🎛️ `setf` (with a mask)

fmtflags std::ios_base::setf(fmtflags __fmtfl, fmtflags __mask) [inline], [inherited]

Setting new format flags.

Parameters

__fmtfl — additional flags to set.
__mask — the flags mask for fmtfl.

Returns

the previous format control flags.

This function clears mask in the format flags, then sets fmtfl & mask. One example mask is ios_base::adjustfield. 💅

🚨 `setstate`

template<typename _CharT, typename _Traits> void std::basic_ios<_CharT, _Traits>::setstate(iostate __state) [inline], [inherited]

Sets additional flags in the error state.

Parameters

__state — the additional state flag(s) to set.

See std::ios_base::iostate for the possible bit values.

Referenced by — okay bestie, buckle up, this list is long 🫠:

std::basic_ostream<_CharT, _Traits>::sentry::sentry()
std::basic_fstream<char>::close()
std::basic_ifstream<char>::close()
std::basic_ofstream<char>::close()
std::basic_ostream<_CharT, _Traits>::flush()
std::basic_istream<_CharT, _Traits>::get()
std::basic_istream<_CharT, _Traits>::get()
std::getline()
std::getline()
std::basic_fstream<char>::open()
std::basic_fstream<char>::open()
std::basic_ifstream<char>::open()
std::basic_ifstream<char>::open()
std::basic_ofstream<char>::open()
std::basic_ofstream<char>::open()
std::basic_ostream<_CharT, _Traits>::operator<<()
std::operator<<()
std::operator<<()
std::basic_istream<_CharT, _Traits>::operator>>()
std::basic_istream<_CharT, _Traits>::operator>>()
std::operator>>()
std::operator>>()
std::operator>>()
std::tr2::operator>>()
std::basic_ostream<_CharT, _Traits>::put()
std::basic_istream<_CharT, _Traits>::putback()
std::basic_istream<_CharT, _Traits>::read()
std::basic_istream<_CharT, _Traits>::readsome()
std::basic_istream<_CharT, _Traits>::seekg()
std::basic_istream<_CharT, _Traits>::seekg()
std::basic_ostream<_CharT, _Traits>::seekp()
std::basic_ostream<_CharT, _Traits>::seekp()
std::basic_istream<_CharT, _Traits>::sync()
std::ws()

and yes, a few of those appear twice. that's the page, not me 😭 keeping it 100% faithful.

📝 `str()` — copying it out

template<typename _CharT, typename _Traits, typename _Alloc> __string_type std::basic_istringstream<_CharT, _Traits, _Alloc>::str() const & [inline], [nodiscard]

Copying out the string buffer.

Returns

rdbuf()->str()

🔁 `str(const __string_type&)` — setting a new one

template<typename _CharT, typename _Traits, typename _Alloc> void std::basic_istringstream<_CharT, _Traits, _Alloc>::str(const __string_type& __s) [inline]

Setting a new buffer.

Parameters

__s — the string to use as a new sequence.

Calls rdbuf()->str(s).

🔄 `sync`

template<typename _CharT, typename _Traits> int std::basic_istream<_CharT, _Traits>::sync(void) [inherited]

Synchronizing the stream buffer. get everyone on the same page, bestie 🤝

Returns

0 on success, -1 on failure

If rdbuf() is a null pointer, it returns -1.

Otherwise, it calls rdbuf()->pubsync(), and if that returns -1, it sets badbit and returns -1.

Otherwise, it returns 0. slay.

Note: this function does not count the number of characters extracted, if any, and therefore does not affect the next call to gcount().

References std::ios_base::badbit, std::ios_base::goodbit, std::basic_streambuf<_CharT, _Traits>::pubsync(), std::basic_ios<_CharT, _Traits>::rdbuf(), and std::basic_ios<_CharT, _Traits>::setstate().

🌉 `sync_with_stdio`

bool std::ios_base::sync_with_stdio(bool __sync = true) [static], [inherited]

Interaction with the standard C I/O objects.

Parameters

__sync — whether to synchronize or not.

Returns

true if the standard streams were previously synchronized.

Important caveat, so listen up: the synchronization referred to is only that between the standard C facilities (e.g., stdout) and the standard C++ objects (e.g., cout). User-declared streams are unaffected. See https://gcc.gnu.org/onlinedocs/libstdc++/manual/fstreams.html#std.io.filestreams.binary

`tellg`

template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits >::pos_type
std::basic_istream< _CharT, _Traits >::tellg (void )

[inherited]

Okay bestie, this one is literally just "where am I rn?" for reading. 📍 It hands you the current read position.

Returns: a file position object. Simple as that.

But the deets: if fail() is not false, it returns pos_type(-1) to say "nope, failed 😭". Otherwise it returns rdbuf()->pubseekoff(0,cur,in).

Note 🫶 — this function does not count how many characters got extracted (if any), so it does not affect the next call to gcount(). And — plot twist — at variance with putback, unget and seekg, eofbit is not cleared first. She stays where she is, periodt. 💅

References std::ios_base::badbit, std::ios_base::cur, std::basic_ios< _CharT, _Traits >::fail(), std::ios_base::in, and std::basic_ios< _CharT, _Traits >::rdbuf().

`tie` (the const one)

template<typename _CharT, typename _Traits> basic_ostream< _CharT, _Traits > *
std::basic_ios< _CharT, _Traits >::tie () const

[inline], [nodiscard], [inherited]

Fetches the current tied stream. 🎀

Returns: a pointer to the tied stream, or NULL if the stream isn't tied.

So here's the vibe: a stream can be tied (a.k.a. synchronized) to a second output stream. The moment this stream does any I/O, the tied stream gets flushed first. The iconic example: std::cin is tied to std::cout. 🌸

Referenced by std::basic_ostream< _CharT, _Traits >::sentry::sentry(), and copyfmt().

`tie` (the setter one)

template<typename _CharT, typename _Traits> basic_ostream< _CharT, _Traits > *
std::basic_ios< _CharT, _Traits >::tie (basic_ostream< _CharT, _Traits > * __tiestr)

[inline], [inherited]

Ties this stream to an output stream. Gluing them together fr fr. 🫶

Parameters:

__tiestr — the output stream.

Returns: the previously tied output stream, or NULL if the stream wasn't tied.

This sets up a brand new tie; peep tie() for more. 💖

`unget`

template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > &
std::basic_istream< _CharT, _Traits >::unget (void )

[inherited]

Unextracting the previous character. Yes, you read that right — she's giving it back. 😭

Returns: *this

If rdbuf() is not null, it calls rdbuf()->sungetc(c).

If rdbuf() is null or if sungetc() fails, it sets badbit in the error state. 💀

Note 🧚 — this function first clears eofbit. And since no characters are extracted, the next call to gcount() will return 0, as required by DR 60. No cap.

References _M_gcount, std::ios_base::badbit, std::basic_ios< _CharT, _Traits >::clear(), std::ios_base::eofbit, std::ios_base::goodbit, std::basic_ios< _CharT, _Traits >::rdbuf(), std::basic_ios< _CharT, _Traits >::rdstate(), and std::basic_streambuf< _CharT, _Traits >::sungetc().

Referenced by std::__detail::operator>>().

`std::ios_base::unsetf`

void std::ios_base::unsetf (fmtflags __mask)

[inline], [inherited]

Clearing format flags. 🧹✨

Parameters:

__mask — the flags to unset.

This function clears __mask in the format flags.

`widen`

template<typename _CharT, typename _Traits> char_type
std::basic_ios< _CharT, _Traits >::widen (char __c) const

[inline], [inherited]

Widens characters. She's stretching the lil guy out. 🌈

Parameters:

__c — the character to widen.

Returns: the widened character.

Maps a character of char to a character of char_type.

Returns the result of

std::use_facet<ctype<char_type> >(getloc()).widen(c)

Additional l10n notes are at https://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html

Referenced by std::endl(), std::basic_ios< char_type, traits_type >::fill(), std::basic_istream< char_type, traits_type >::get(), std::basic_istream< char_type, traits_type >::get(), std::basic_istream< char_type, traits_type >::getline(), std::getline(), std::getline(), std::operator<<(), std::operator<<(), std::philox_engine< uint_fast32_t, 32, 4, 10, 0xCD9E8D57, 0x9E3779B9, 0xD2511F53, 0xBB67AE85 >::operator<<, and std::tr2::operator>>().

`width` (getter)

streamsize std::ios_base::width () const

[inline], [nodiscard], [inherited]

Flags access. 👀

Returns: the minimum field width to generate on output operations.

Minimum field width refers to the number of characters.

Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::num_put< _CharT, _OutIter >::do_put(), std::operator>>(), and std::operator>>().

`width` (setter)

streamsize std::ios_base::width (streamsize __wide)

[inline], [inherited]

Changing flags. 🔧

Parameters:

__wide — the new width value.

Returns: the previous value of width().

`xalloc`

int std::ios_base::xalloc ()

[static], [inherited]

Access to unique indices. 🔑

Returns: an integer different from all previous calls.

This function returns a unique integer every single time it's called. It can be used for any purpose, but it's primarily intended to be a unique index for the iword and pword functions. The expectation is that an application calls xalloc in order to obtain an index in the iword and pword arrays that can be used without fear of conflict.

The implementation maintains a static variable that is incremented and returned on each invocation. xalloc is guaranteed to return an index that is safe to use in the iword and pword arrays. Periodt. 💅

👑 Member Data Documentation 👑

`_M_gcount`

template<typename _CharT, typename _Traits> streamsize
std::basic_istream< _CharT, _Traits >::_M_gcount

[protected], [inherited]

The number of characters extracted in the previous unformatted function; see gcount(). 🧮

Referenced by get(), get(), get(), get(), ignore(), ignore(), ignore(), peek(), putback(), read(), readsome(), and unget().

`adjustfield`

const fmtflags std::ios_base::adjustfield

[static], [inherited]

A mask of left|right|internal. Useful for the 2-arg form of setf. 💅

Referenced by std::num_put< _CharT, _OutIter >::do_put(), std::internal(), std::left(), and std::right().

`app`

const openmode std::ios_base::app

[static], [inherited]

Seek to end before each write. 📝

Referenced by std::basic_filebuf< char_type, traits_type >::_M_set_buffer(), std::basic_filebuf< _CharT, _Traits >::overflow(), and std::basic_filebuf< _CharT, _Traits >::xsputn().

`ate`

const openmode std::ios_base::ate

[static], [inherited]

Open and seek to end immediately after opening. 🏃‍♀️💨

Referenced by std::basic_filebuf< _CharT, _Traits >::open().

`badbit`

const iostate std::ios_base::badbit

[static], [inherited]

Indicates a loss of integrity in an input or output sequence (such as an irrecoverable read error from a file). 💀 This is the "everything is on fire" bit, bestie.

Referenced by std::basic_istream< _CharT, _Traits >::sentry::sentry(), std::basic_ostream< _CharT, _Traits >::sentry::~sentry(), std::basic_ios< _CharT, _Traits >::clear(), std::basic_ostream< _CharT, _Traits >::flush(), std::basic_iostream< char_type, traits_type >::get(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::get(), std::basic_iostream< char_type, traits_type >::operator<<(), std::basic_ostream< _CharT, _Traits >::operator<<(), std::basic_istream< _CharT, _Traits >::operator>>(), std::operator>>(), std::basic_ostream< _CharT, _Traits >::put(), std::basic_istream< _CharT, _Traits >::putback(), std::basic_istream< _CharT, _Traits >::read(), std::basic_istream< _CharT, char_traits< _CharT > >::read(), std::basic_istream< _CharT, _Traits >::readsome(), std::basic_istream< _CharT, _Traits >::seekg(), std::basic_istream< _CharT, _Traits >::seekg(), std::basic_istream< _CharT, _Traits >::sync(), std::basic_istream< _CharT, _Traits >::tellg(), std::basic_istream< _CharT, _Traits >::unget(), and std::ws().

`basefield`

const fmtflags std::ios_base::basefield

[static], [inherited]

A mask of dec|oct|hex. Useful for the 2-arg form of setf. 🔢

Referenced by std::dec(), std::num_get< _CharT, _InIter >::do_get(), std::num_put< _CharT, _OutIter >::do_put(), std::hex(), and std::oct().

`beg`

const seekdir std::ios_base::beg

[static], [inherited]

Request a seek relative to the beginning of the stream. ⏪

Referenced by std::basic_filebuf< _CharT, _Traits >::seekpos().

`binary`

const openmode std::ios_base::binary

[static], [inherited]

Perform input and output in binary mode (as opposed to text mode). 🦋

Heads up bestie!! 🚨 This is probably not what you think it is; see https://gcc.gnu.org/onlinedocs/libstdc++/manual/fstreams.html#std.io.filestreams.binary.

Referenced by std::basic_filebuf< _CharT, _Traits >::showmanyc().

`boolalpha`

const fmtflags std::ios_base::boolalpha

[static], [inherited]

Insert/extract bool in alphabetic rather than numeric format. So you get true/false instead of 1/0, iconic honestly. ✨

Referenced by std::boolalpha(), std::num_get< _CharT, _InIter >::do_get(), std::num_put< _CharT, _OutIter >::do_put(), and std::noboolalpha().

`cur`

const seekdir std::ios_base::cur

[static], [inherited]

Request a seek relative to the current position within the sequence. 📍

Referenced by std::basic_filebuf< _CharT, _Traits >::imbue(), std::basic_filebuf< _CharT, _Traits >::overflow(), std::basic_filebuf< _CharT, _Traits >::pbackfail(), std::basic_filebuf< _CharT, _Traits >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_istream< _CharT, _Traits >::tellg(), and std::basic_ostream< _CharT, _Traits >::tellp().

`dec`

const fmtflags std::ios_base::dec

[static], [inherited]

Converts integer input or generates integer output in decimal base. 🔟

Referenced by std::dec(), std::philox_engine< uint_fast32_t, 32, 4, 10, 0xCD9E8D57, 0x9E3779B9, 0xD2511F53, 0xBB67AE85 >::operator<<, and std::philox_engine< uint_fast32_t, 32, 4, 10, 0xCD9E8D57, 0x9E3779B9, 0xD2511F53, 0xBB67AE85 >::operator>>.

`end`

const seekdir std::ios_base::end

[static], [inherited]

Request a seek relative to the current end of the sequence. ⏩

Referenced by std::basic_filebuf< _CharT, _Traits >::open(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff().

`eofbit`

const iostate std::ios_base::eofbit

[static], [inherited]

Indicates that an input operation reached the end of an input sequence. 🏁 That's all she wrote.

Referenced by std::num_get< _CharT, _InIter >::do_get(), std::num_get< _CharT, _InIter >::do_get(), std::num_get< _CharT, _InIter >::do_get(), std::num_get< _CharT, _InIter >::do_get(), std::time_get< _CharT, _InIter >::do_get(), std::time_get< _CharT, _InIter >::do_get_date(), std::time_get< _CharT, _InIter >::do_get_monthname(), std::time_get< _CharT, _InIter >::do_get_time(), std::time_get< _CharT, _InIter >::do_get_weekday(), std::time_get< _CharT, _InIter >::do_get_year(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::get(), std::time_get< _CharT, _InIter >::get(), std::basic_istream< _CharT, _Traits >::ignore(), std::basic_istream< _CharT, _Traits >::operator>>(), std::operator>>(), std::basic_istream< _CharT, char_traits< _CharT > >::peek(), std::basic_istream< _CharT, _Traits >::putback(), std::basic_istream< _CharT, _Traits >::read(), std::basic_istream< _CharT, _Traits >::readsome(), std::basic_istream< _CharT, _Traits >::seekg(), std::basic_istream< _CharT, _Traits >::seekg(), std::basic_istream< _CharT, char_traits< _CharT > >::seekg(), std::basic_istream< _CharT, _Traits >::unget(), std::basic_istream< _CharT, char_traits< _CharT > >::unget(), and std::ws().

okay bestie, final stretch of the inherited ios_base constants — the static data members that run the whole stream flag situation. no cap, they're the foundation of everything. let's go 💅✨

const iostate std::ios_base::failbit [static], [inherited] — Indicates that an input operation failed to read the expected characters, or that an output operation failed to generate the desired characters.
- Referenced by: std::basic_ostream< _CharT, _Traits >::sentry::sentry(), std::basic_fstream< char >::close(), std::basic_ifstream< char >::close(), std::basic_ofstream< char >::close(), std::num_get< _CharT, _InIter >::do_get(), std::time_get< _CharT, _InIter >::do_get_monthname(), std::time_get< _CharT, _InIter >::do_get_weekday(), std::time_get< _CharT, _InIter >::do_get_year(), std::basic_istream< _CharT, _Traits >::get() (×2), std::time_get< _CharT, _InIter >::get(), std::basic_fstream< char >::open() (×2), std::basic_ifstream< char >::open() (×2), std::basic_ofstream< char >::open() (×2), std::operator<<(), std::basic_iostream< char_type, traits_type >::operator>>(), std::basic_istream< _CharT, _Traits >::operator>>() (×2), std::operator>>(), std::basic_istream< _CharT, _Traits >::read(), std::basic_istream< _CharT, _Traits >::seekg() (×2), std::basic_ostream< _CharT, _Traits >::seekp() (×2).
const fmtflags std::ios_base::fixed [static], [inherited] — Generate floating-point output in fixed-point notation.
- Referenced by: std::fixed(), and std::hexfloat().
const fmtflags std::ios_base::floatfield [static], [inherited] — A mask of scientific|fixed. Useful for the 2-arg form of setf.
- Referenced by: std::defaultfloat(), std::fixed(), std::hexfloat(), and std::scientific().
const iostate std::ios_base::goodbit [static], [inherited] — Indicates all is well.
- Referenced by: std::basic_istream< _CharT, _Traits >::sentry::sentry(), std::num_get< _CharT, _InIter >::do_get(), std::time_get< _CharT, _InIter >::do_get(), std::time_get< _CharT, _InIter >::do_get_monthname(), std::time_get< _CharT, _InIter >::do_get_weekday(), std::time_get< _CharT, _InIter >::do_get_year(), std::basic_ostream< _CharT, _Traits >::flush(), std::basic_iostream< char_type, traits_type >::get(), std::basic_istream< _CharT, _Traits >::get() (×4), std::time_get< _CharT, _InIter >::get(), std::basic_istream< _CharT, _Traits >::ignore() (×3), std::basic_iostream< char_type, traits_type >::operator<<(), std::basic_ostream< _CharT, _Traits >::operator<<(), std::basic_iostream< char_type, traits_type >::operator>>(), std::basic_istream< _CharT, _Traits >::operator>>() (×2), std::operator>>(), std::basic_istream< _CharT, _Traits >::peek(), std::basic_ostream< _CharT, _Traits >::put(), std::basic_istream< _CharT, _Traits >::putback(), std::basic_istream< _CharT, _Traits >::read(), std::basic_istream< _CharT, _Traits >::readsome(), std::basic_istream< _CharT, _Traits >::seekg() (×2), std::basic_istream< _CharT, _Traits >::sync(), std::basic_istream< _CharT, _Traits >::unget(), and std::ws().
const fmtflags std::ios_base::hex [static], [inherited] — Converts integer input or generates integer output in hexadecimal base.
- Referenced by: std::num_get< _CharT, _InIter >::do_get(), std::num_put< _CharT, _OutIter >::do_put(), and std::hex().
const openmode std::ios_base::in [static], [inherited] — Open for input. Default for ifstream and fstream.
- Referenced by: std::basic_fstream< char >::basic_fstream() (×3), std::basic_ifstream< char >::basic_ifstream() (×3), std::basic_istringstream< char >::basic_istringstream(), std::basic_stringbuf< char >::basic_stringbuf(), std::basic_stringstream< char >::basic_stringstream(), std::basic_filebuf< char_type, traits_type >::_M_set_buffer(), std::basic_fstream< char >::open() (×3), std::basic_ifstream< char >::open() (×3), std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_filebuf< _CharT, _Traits >::pbackfail(), std::basic_streambuf< char_type, traits_type >::pubseekoff(), std::basic_streambuf< char_type, traits_type >::pubseekpos(), std::basic_istream< _CharT, _Traits >::seekg() (×2), std::basic_streambuf< char_type, traits_type >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_stringbuf< char >::seekoff(), std::basic_streambuf< char_type, traits_type >::seekpos(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), std::basic_stringbuf< char >::seekpos(), std::basic_filebuf< _CharT, _Traits >::showmanyc(), std::basic_stringbuf< char >::showmanyc(), std::basic_istream< _CharT, _Traits >::tellg(), std::basic_filebuf< _CharT, _Traits >::underflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::underflow(), and std::basic_filebuf< _CharT, _Traits >::xsgetn().
const fmtflags std::ios_base::internal [static], [inherited] — Adds fill characters at a designated internal point in certain generated output, or identical to right if no such point is designated.
- Referenced by: std::internal().
const fmtflags std::ios_base::left [static], [inherited] — Adds fill characters on the right (final positions) of certain generated output. (I.e., the thing you print is flush left.).
- Referenced by: std::num_put< _CharT, _OutIter >::do_put(), std::left(), and std::philox_engine< uint_fast32_t, 32, 4, 10, 0xCD9E8D57, 0x9E3779B9, 0xD2511F53, 0xBB67AE85 >::operator<<.
const fmtflags std::ios_base::oct [static], [inherited] — Converts integer input or generates integer output in octal base.
- Referenced by: std::oct().
const openmode std::ios_base::out [static], [inherited] — Open for output. Default for ofstream and fstream.
- Referenced by: std::basic_fstream< char >::basic_fstream() (×3), std::basic_ofstream< char >::basic_ofstream() (×3), std::basic_ostringstream< char >::basic_ostringstream(), std::basic_stringbuf< char >::basic_stringbuf(), std::basic_stringstream< char >::basic_stringstream(), std::basic_filebuf< char_type, traits_type >::_M_set_buffer(), std::basic_fstream< char >::open() (×3), std::basic_ofstream< char >::open() (×3), std::basic_filebuf< _CharT, _Traits >::overflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::pbackfail(), std::basic_streambuf< char_type, traits_type >::pubseekoff(), std::basic_streambuf< char_type, traits_type >::pubseekpos(), std::basic_streambuf< char_type, traits_type >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_stringbuf< char >::seekoff(), std::basic_ostream< _CharT, _Traits >::seekp() (×2), std::basic_streambuf< char_type, traits_type >::seekpos(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), std::basic_stringbuf< char >::seekpos(), std::basic_ostream< _CharT, _Traits >::tellp(), and std::basic_filebuf< _CharT, _Traits >::xsputn().
const fmtflags std::ios_base::right [static], [inherited] — Adds fill characters on the left (initial positions) of certain generated output. (I.e., the thing you print is flush right.).
- Referenced by: std::right().
const fmtflags std::ios_base::scientific [static], [inherited] — Generates floating-point output in scientific notation.
- Referenced by: std::hexfloat(), and std::scientific().
const fmtflags std::ios_base::showbase [static], [inherited] — Generates a prefix indicating the numeric base of generated integer output.
- Referenced by: std::num_put< _CharT, _OutIter >::do_put(), std::noshowbase(), and std::showbase().
const fmtflags std::ios_base::showpoint [static], [inherited] — Generates a decimal-point character unconditionally in generated floating-point output.
- Referenced by: std::noshowpoint(), and std::showpoint().
const fmtflags std::ios_base::showpos [static], [inherited] — Generates a + sign in non-negative generated numeric output.
- Referenced by: std::noshowpos(), and std::showpos().
const fmtflags std::ios_base::skipws [static], [inherited] — Skips leading white space before certain input operations.
- Referenced by: std::noskipws(), std::__detail::operator>>(), std::philox_engine< uint_fast32_t, 32, 4, 10, 0xCD9E8D57, 0x9E3779B9, 0xD2511F53, 0xBB67AE85 >::operator>>, and std::skipws().
const openmode std::ios_base::trunc [static], [inherited] — Truncate an existing stream when opening. Default for ofstream.
const fmtflags std::ios_base::unitbuf [static], [inherited] — Flushes output after each output operation.
- Referenced by: std::basic_ostream< _CharT, _Traits >::sentry::~sentry(), std::nounitbuf(), and std::unitbuf().
const fmtflags std::ios_base::uppercase [static], [inherited] — Replaces certain lowercase letters with their uppercase equivalents in generated output.
- Referenced by: std::num_put< _CharT, _OutIter >::do_put(), std::nouppercase(), and std::uppercase().

👑 Author

Generated automatically by Doxygen for libstdc++ from the source code. iconic, honestly.

That's the whole page, bestie. The footer says source/version libstdc++ and the title is std::basic...s, _Alloc >(3) — the date isn't in this bit, so I'm not making one up. periodt. 💅🦋

📦 where this page comes from

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💖 girlified by deepseek-ai/DeepSeek-V4.1-Flash on 2026-10-14: a language model's rewrite of the original, under its terms

STD::ISTRINGSTREAM(3)

💖 NAME 💖

✨ SYNOPSIS ✨

🌸 Public Types 🌸

👑 Public Member Functions 👑

💅 Extractors 💅

🦋 Unformatted Input Functions 🦋

🌟 Static Public Member Functions 🌟

💫 Static Public Attributes 💫

🛡️ Protected Types 🛡️

🧸 Protected Member Functions 🧸

🔒 Protected Attributes 🔒

🌸 Detailed Description 🌸

✨ Template Parameters ✨

💖 Member Typedef Documentation 💖

template<typename _CharT, typename _Traits> typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> > std::basic_ios< _CharT, _Traits >::__num_put_type [inherited]

typedef void(* std::ios_base::event_callback) (event __e, ios_base &__b, int __i) [inherited]

Parameters

typedef _Ios_Fmtflags std::ios_base::fmtflags [inherited]

typedef _Ios_Iostate std::ios_base::iostate [inherited]

typedef _Ios_Openmode std::ios_base::openmode [inherited]

typedef _Ios_Seekdir std::ios_base::seekdir [inherited]

🦋 Member Enumeration Documentation 🦋

enum std::ios_base::event [inherited]

🌸 Constructor & Destructor Documentation 🌸

✨ basic_istringstream() — the default one, no cap ✨

✨ basic_istringstream(ios_base::openmode __mode) — pick your mode ✨

✨ basic_istringstream(const __string_type & __str, ios_base::openmode __mode = ios_base::in) — bring your own string ✨

✨ ~basic_istringstream() — the destructor, she does nothing ✨

💖 Member Function Documentation 💖

🌈 std::ios_base::_M_getloc() — locale access 🌈

🌈 bad() — fast error checking 🌈

🌈 clear(iostate __state = goodbit) — [Re]sets the error state 🌈

🌈 copyfmt() — copies fields of __rhs into this 🌈

🌈 eof() — fast error checking again 🌈

🌈 exceptions() const — the getter 🌈

🌈 exceptions(iostate __except) — the setter, and she's dramatic 🌈

🌈 fail() — fast error checking, the remix 🌈

🌈 fill() const — retrieves the empty character 🌈

🌈 fill(char_type __ch) — sets a new empty character 🌈

🌈 std::ios_base::flags() const — access to format flags 🌈

🌈 std::ios_base::flags(fmtflags __fmtfl) — setting new format flags all at once 🌈

🌈 gcount() — character counting 🌈

🌈 get(void) — simple extraction 🌈

🌈 get(__streambuf_type & __sb) — extraction into another streambuf 🌈

🌈 get(__streambuf_type & __sb, char_type __delim) — extraction into another streambuf, now with a stop character 🌈

🍓 template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::get (char_type & __c) [inherited]

🌸 template<typename _CharT, typename _Traits> __istream_type & std::basic_istream< _CharT, _Traits >::get (char_type * __s, streamsize __n) [inline], [inherited]

🦋 template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::get (char_type * __s, streamsize __n, char_type __delim) [inherited]

🎀 template<typename _CharT, typename _Traits> __istream_type & std::basic_istream< _CharT, _Traits >::getline (char_type * __s, streamsize __n) [inline], [inherited]

💜 basic_istream< char > & std::basic_istream< char >::getline (char_type * __s, streamsize __n, char_type __delim) [inherited]

✨ template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::getline (char_type * __s, streamsize __n, char_type __delim) [inherited]

🌈 locale std::ios_base::getloc () const [inline], [nodiscard], [inherited]

💖 template<typename _CharT, typename _Traits> bool std::basic_ios< _CharT, _Traits >::good () const [inline], [nodiscard], [inherited]

🧚 template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::ignore (void ) [inherited]

🍓 template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::ignore (streamsize __n) [inherited]

🎀 template<typename _CharT, typename _Traits> __istream_type & std::basic_istream< _CharT, _Traits >::ignore (streamsize __n, char __delim) [inline], [inherited]

💜 template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::ignore (streamsize __n, int_type __delim) [inherited]

🌸 template<typename _CharT, typename _Traits> locale std::basic_ios< _CharT, _Traits >::imbue (const locale & __loc) [inherited]

🦋 template<typename _CharT, typename _Traits> void std::basic_ios< _CharT, _Traits >::init (basic_streambuf< _CharT, _Traits > * __sb) [protected], [inherited]

🎀 long & std::ios_base::iword (int __ix) [inline], [inherited]

💖 template<typename _CharT, typename _Traits> char std::basic_ios< _CharT, _Traits >::narrow (char_type __c, char __dfault) const [inline], [inherited]

operator bool () — the vibe check for your stream 💅

operator! () — the other vibe check 🦋

🎀 operator>> overloads — the extractor era

operator>> (__ios_type &(*__pf)(__ios_type &)) — manipulator interface 🧚

operator>> (__istream_type &(*__pf)(__istream_type &)) — manipulator interface, the sequel 🌸

operator>> (__streambuf_type *__sb) — extracting into another streambuf 💀

operator>> (bool &__n) — integer arithmetic extractors 🔥

operator>> (double &__f) — floating point arithmetic extractors 🦋

operator>> (float &__f) — floating point arithmetic extractors (yes, again) 🌈

operator>> (int &__n) — integer arithmetic extractors 💖

operator>> (ios_base &(*__pf)(ios_base &)) — manipulator interface again 🧚

operator>> (long &__n) — integer arithmetic extractors 🌸

operator>> (long double &__f) — floating point arithmetic extractors ✨

operator>> (long long &__n) — integer arithmetic extractors 🔥

operator>> (short &__n) — integer arithmetic extractors 🎀

operator>> (unsigned int &__n) — integer arithmetic extractors 💖

operator>> (unsigned long &__n) — integer arithmetic extractors 🌸

operator>> (unsigned long long &__n) — integer arithmetic extractors 👑

`template<typename _CharT, typename _Traits> typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> > std::basic_ios< _CharT, _Traits >::__num_put_type` [inherited]

`typedef void(* std::ios_base::event_callback) (event __e, ios_base &b, int i)` [inherited]

`typedef _Ios_Fmtflags std::ios_base::fmtflags` [inherited]

`typedef _Ios_Iostate std::ios_base::iostate` [inherited]

`typedef _Ios_Openmode std::ios_base::openmode` [inherited]

`typedef _Ios_Seekdir std::ios_base::seekdir` [inherited]

`enum std::ios_base::event` [inherited]

✨ `basic_istringstream()` — the default one, no cap ✨

✨ `basic_istringstream(ios_base::openmode __mode)` — pick your mode ✨

✨ `basic_istringstream(const __string_type & __str, ios_base::openmode __mode = ios_base::in)` — bring your own string ✨

✨ `~basic_istringstream()` — the destructor, she does nothing ✨

🌈 `std::ios_base::_M_getloc()` — locale access 🌈

🌈 `bad()` — fast error checking 🌈

🌈 `clear(iostate __state = goodbit)` — [Re]sets the error state 🌈

🌈 `copyfmt()` — copies fields of `__rhs` into this 🌈

🌈 `eof()` — fast error checking again 🌈

🌈 `exceptions()` const — the getter 🌈

🌈 `exceptions(iostate __except)` — the setter, and she's dramatic 🌈

🌈 `fail()` — fast error checking, the remix 🌈

🌈 `fill()` const — retrieves the empty character 🌈

🌈 `fill(char_type __ch)` — sets a new empty character 🌈

🌈 `std::ios_base::flags()` const — access to format flags 🌈

🌈 `std::ios_base::flags(fmtflags __fmtfl)` — setting new format flags all at once 🌈

🌈 `gcount()` — character counting 🌈

🌈 `get(void)` — simple extraction 🌈

🌈 `get(__streambuf_type & __sb)` — extraction into another streambuf 🌈

🌈 `get(__streambuf_type & __sb, char_type __delim)` — extraction into another streambuf, now with a stop character 🌈

🍓 `template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::get (char_type & __c)` [inherited]

🌸 `template<typename _CharT, typename _Traits> __istream_type & std::basic_istream< _CharT, _Traits >::get (char_type * s, streamsize n)` [inline], [inherited]

🦋 `template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::get (char_type * s, streamsize n, char_type __delim)` [inherited]

🎀 `template<typename _CharT, typename _Traits> __istream_type & std::basic_istream< _CharT, _Traits >::getline (char_type * s, streamsize n)` [inline], [inherited]

💜 `basic_istream< char > & std::basic_istream< char >::getline (char_type * s, streamsize n, char_type __delim)` [inherited]

✨ `template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::getline (char_type * s, streamsize n, char_type __delim)` [inherited]

🌈 `locale std::ios_base::getloc () const` [inline], [nodiscard], [inherited]

💖 `template<typename _CharT, typename _Traits> bool std::basic_ios< _CharT, _Traits >::good () const` [inline], [nodiscard], [inherited]

🧚 `template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::ignore (void )` [inherited]

🍓 `template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::ignore (streamsize __n)` [inherited]

🎀 `template<typename _CharT, typename _Traits> __istream_type & std::basic_istream< _CharT, _Traits >::ignore (streamsize n, char delim)` [inline], [inherited]

💜 `template<typename _CharT, typename _Traits> basic_istream< _CharT, _Traits > & std::basic_istream< _CharT, _Traits >::ignore (streamsize __n, int_type __delim)` [inherited]

🌸 `template<typename _CharT, typename _Traits> locale std::basic_ios< _CharT, _Traits >::imbue (const locale & __loc)` [inherited]

🦋 `template<typename _CharT, typename _Traits> void std::basic_ios< _CharT, _Traits >::init (basic_streambuf< _CharT, _Traits > * __sb)` [protected], [inherited]

🎀 `long & std::ios_base::iword (int __ix)` [inline], [inherited]

💖 `template<typename _CharT, typename _Traits> char std::basic_ios< _CharT, _Traits >::narrow (char_type c, char dfault) const` [inline], [inherited]

`operator bool ()` — the vibe check for your stream 💅

`operator! ()` — the other vibe check 🦋

🎀 `operator>>` overloads — the extractor era

`operator>> (__ios_type &(*pf)(ios_type &))` — manipulator interface 🧚

`operator>> (__istream_type &(*pf)(istream_type &))` — manipulator interface, the sequel 🌸

`operator>> (__streambuf_type *__sb)` — extracting into another streambuf 💀

`operator>> (bool &__n)` — integer arithmetic extractors 🔥

`operator>> (double &__f)` — floating point arithmetic extractors 🦋

`operator>> (float &__f)` — floating point arithmetic extractors (yes, again) 🌈

`operator>> (int &__n)` — integer arithmetic extractors 💖

`operator>> (ios_base &(*__pf)(ios_base &))` — manipulator interface again 🧚

`operator>> (long &__n)` — integer arithmetic extractors 🌸

`operator>> (long double &__f)` — floating point arithmetic extractors ✨

`operator>> (long long &__n)` — integer arithmetic extractors 🔥

`operator>> (short &__n)` — integer arithmetic extractors 🎀

`operator>> (unsigned int &__n)` — integer arithmetic extractors 💖

`operator>> (unsigned long &__n)` — integer arithmetic extractors 🌸

`operator>> (unsigned long long &__n)` — integer arithmetic extractors 👑

`operator>> (unsigned short &__n)` — integer arithmetic extractors 🍓

`operator>> (void *&__p)` — basic arithmetic extractors 💀

`peek (void )` — looking ahead in the stream 👀

`precision () const` — flags access ✨

`precision (streamsize __prec)` — changing flags 🎀

`putback (char_type __c)` — unextracting a single character 😭

`pword (int __ix)` — access to void pointer array 🌟

🔄 `rdbuf` — the setter version

🎀 `rdbuf()` — the getter version (istringstream edition)

🧠 `rdstate`

📥 `read`

🥄 `readsome`

📞 `register_callback`

⏪ `seekg` (the offset + direction one)

⏩ `seekg` (the position one)

🎛️ `setf` (one argument)

🎛️🎛️ `setf` (with a mask)

🚨 `setstate`

📝 `str()` — copying it out