__GNU_CXX::CONSTANT_UNARY_FUN(3cxx)

🌸 NAME 🌸

okay so this page is all about __gnu_cxx::constant_unary_fun< _Result, _Argument > — and yes bestie, it’s an SGI extension. It lives in the 3cxx manual, and we’re gonna get into it 💅

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✨ SYNOPSIS ✨

#include <functional>

It inherits __gnu_cxx::_Constant_unary_fun< _Result, _Argument >.

🎀 Public Types 🎀

• argument_type — typedef _Argument argument_type
• result_type — typedef _Result result_type

🫶 Public Member Functions 🫶

• constant_unary_fun (const _Result &__v) — the constructor, taking const _Result &__v
• const result_type & operator() (const _Argument &) const — the call operator, returning const result_type &, taking const _Argument &, and it’s const

🦋 Public Attributes 🦋

• result_type _M_val — a public attribute, just sitting there being iconic

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💖 Detailed Description 💖

Under the hood it’s declared like this:

template<class _Result, class _Argument = _Result>
    struct __gnu_cxx::constant_unary_fun< _Result, _Argument >

And the entire detailed description is literally "An SGI extension . — yes, with the stray quote and the space before the period. We keep the lore 🫡✨

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👑 Author 👑

Bestie, nobody hand-wrote this one: Generated automatically by Doxygen for libstdc++ from the source code.

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Cute little sign-off: this page is from the libstdc++ docs, generated straight from the source code, and it’s chillin’ in the 3cxx manual — no date printed on the footer, so this page has no birthday 🎂😭. Stay hydrated and #include <functional> responsibly, bestie 💜🌈✨