std::bit_or(3)

okay bestie, welcome to std::bit_or(3) from the C++ Standard Libary — yep, “Libary” is literally how the header spells it, and we respect the source 😭💅

🌸 NAME 🌸

std::bit_or — std::bit_or. That’s the name, that’s the whole name, main character energy from the jump 👑✨

---

✨ Synopsis ✨

Defined in header <functional> — noted, bestie 🫶

template< class T >             (until C++14)
struct bit_or;
template< class T = void >      (since C++14)
struct bit_or;

Function object for performing bitwise OR. Effectively calls operator| on type T. slay 💅

---

🦋 Specializations 🦋

The standard library provides a specialization of std::bit_or when T is not specified, which leaves the parameter types and return type to be deduced. (since C++14)

• bit_or<void> — function object implementing x | y deducing parameter and return types (C++14) — class template specialization. this one ate 💖

---

🎀 Member types 🎀

• result_type — T — (deprecated in C++17)(removed in C++20)
• first_argument_type — T — (deprecated in C++17)(removed in C++20)
• second_argument_type — T — (deprecated in C++17)(removed in C++20)

The way that these member types are obtained is via publicly inheriting std::binary_function<T, T, T>. (until C++11) — lowkey historic, highkey important 🧚

---

💜 Member functions 💜

• operator() — returns the result of bitwise OR of two arguments (public member function). obsessed with the clarity, ngl ✨

🔥 std::bit_or::operator() 🔥

T operator()( const T& lhs, const T& rhs ) const;            (until C++14)
constexpr T operator()( const T& lhs, const T& rhs ) const;  (since C++14)

Returns the result of bitwise OR of lhs and rhs. that’s it, that’s the function, iconic behavior 💅

---

🍓 Parameters 🍓

• lhs, rhs — values to compute bitwise OR of

---

🌈 Return value 🌈

The result of lhs | rhs. periodt 💖

---

⭐ Exceptions ⭐

May throw implementation-defined exceptions. vibe check: yes, it can throw, no cap 😭

---

🦋 Possible implementation 🦋

constexpr T operator()(const T& lhs, const T& rhs) const
{
    return lhs | rhs;
}

literally the blueprint, bestie — short, sweet, iconic 🎀

---

👑 Defect reports 👑

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

• DR: LWG 660 — Applied to: C++98 — Behavior as published: function objects for bitwise operations are missing — Correct behavior: added. fr fr, they fixed it 🌸

---

source/version: http://cppreference.com · date: 2024.06.10 · manual: std::bit_or(3) — okay bestie, that’s the cute sign-off, go forth and bitwise-OR responsibly 💖✨🫶