std::chrono::operator==(std::chrono::weekday)

From cppreference.com
< cpp‎ | chrono‎ | weekday
 
 
Utilities library
General utilities
Date and time
Function objects
Formatting library (C++20)
(C++11)
Relational operators (deprecated in C++20)
Integer comparison functions
(C++20)(C++20)(C++20)   
(C++20)
Swap and type operations
(C++14)
(C++11)
(C++11)
(C++11)
(C++17)
Common vocabulary types
(C++11)
(C++17)
(C++17)
(C++17)
(C++11)
(C++17)
(C++23)
Elementary string conversions
(C++17)
(C++17)
 
 
 
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==.

Return value

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

Notes

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

Example

#include <iostream>
#include <chrono>
 
int main()
{
    using namespace std::literals;
 
    constexpr std::chrono::weekday wd1{2};
    constexpr std::chrono::weekday wd2{std::chrono::Friday};
    // 1 January 2021 is a Friday
    constexpr std::chrono::weekday wd3{2021y/1/1}; 
 
    std::cout << std::boolalpha;
    std::cout << (wd1 == wd2) << "\n";
    std::cout << (wd2 == wd3) << "\n";
}

Output:

false
true