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std::chrono:: operator== (std::chrono::weekday_indexed)

From cppreference.net
C++
Date and time library
std::chrono::weekday_indexed
Defined in header <chrono>
constexpr bool operator == ( const std:: chrono :: weekday_indexed & x,
const std:: chrono :: weekday_indexed & y ) noexcept ;
(since C++20)

Compares the two weekday_indexed x and y .

The != operator is synthesized from operator== .

Return value

x. weekday ( ) == y. weekday ( ) && x. index ( ) == y. index ( )

Example

Run this code 
#include <chrono>
int main()
{
    constexpr std::chrono::weekday_indexed wdi1{std::chrono::Wednesday[2]};
    constexpr std::chrono::weekday_indexed wdi2{std::chrono::weekday(3), 2};
    static_assert(wdi1 == wdi2);
}