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month_weekday_last class

  • Стаття

Represents the last weekday of a month.

Syntax

class month_weekday_last; // C++20

Remarks

The year is unspecified.
month_weekday_last is a trivially copyable and standard-layout class type.

Members

Name Description
Constructors Constructs a month_weekday_last
month Get the month value.
ok Check if the month_weekday_last is valid.
weekday_last Get the weekday value.

Non-members

Name Description
operator== Determine whether two month_weekday_last instances are equal.
operator<< Output a month_weekday_last to the specified stream.

Requirements

Header: <chrono> Since C++20

Namespace: std::chrono

Compiler Option: /std:c++latest

Constructor

Construct a month_weekday_last initialized with a month and weekday_last value.

constexpr month_weekday_last(const month& m, const weekday_last& wdl) noexcept;

Parameters

m The month value for the created month_weekday_last class.

wdl
The weekday_last value for the created month_weekday_last class.

Remarks: Constructor

For information about C++20 syntax to specify dates, see operator/

Example: Create a month_weekday_last

// compile using: /std:c++latest
#include <iostream>
#include <chrono>

using namespace std::chrono;

int main()
{
    constexpr auto mwdl{ January / Monday[last] }; // wdl is the last Monday of January of an unspecified year
    std::cout << mwdl << "\n";

    const auto theMonth = August;
    const auto wdl = Friday[last];
    month_weekday_last mwdl2(theMonth, wdl); 
    std::cout << mwdl2;

    return 0;
}

Jan/Mon[last]
Aug/Fri[last]

month()

Return the month value.

constexpr month month() const noexcept;

Return value

The month value.

ok

Check if the value stored in this month_weekday_last is in the valid range.

constexpr bool ok() const noexcept;

Return value

true if the month and weekday_last value is in the valid range. Otherwise, false.

weekday_last

Get the weekday_last value.

constexpr weekday_last weekday_last() const noexcept;

Return value

The weekday_last value.

See also

<chrono>
month class
month_day class
month_day_last class
month_weekday class
operator/