< cpp‎ | chrono‎ | weekday
Utilities library
Language support
Type support (basic types, RTTI)
Library feature-test macros (C++20)
Dynamic memory management
Program utilities
Coroutine support (C++20)
Variadic functions
Debugging support
Three-way comparison
General utilities
Date and time
Function objects
Formatting library (C++20)
Relational operators (deprecated in C++20)
Integer comparison functions
Swap and type operations
Common vocabulary types
Elementary string conversions

Defined in header <chrono>
constexpr bool operator==( const std::chrono::weekday& x,
                           const std::chrono::weekday& y ) noexcept;
(since C++20)

Compare the two std::chrono::weekday x and y.

The != operator is synthesized from operator==.

[edit] Return value

x.c_encoding() == y.c_encoding()

[edit] Notes

weekday does not support the <, <=, > and >= operators because there is no universal consensus on which day is the first day of the week.

[edit] Example

#include <chrono>
int main()
    using namespace std::literals;
    constexpr std::chrono::weekday wd1{2};
    constexpr std::chrono::weekday wd2{std::chrono::Friday};
    static_assert(wd1 != wd2);
    // 13 January 1313 is a Friday
    constexpr std::chrono::weekday wd3{1313y/1/13d};
    static_assert(wd2 == wd3);