cppreference.com

Namespaces

Variants

Actions

std::chrono::weekday

From cppreference.com

< cpp‎ | chrono

Compiler support

Freestanding and hosted

Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Diagnostics library

Memory management library

Metaprogramming library (C++11)

General utilities library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Strings library

Text processing library

Numerics library

Date and time library

Input/output library

Filesystem library (C++17)

Concurrency support library (C++11)

Execution control library (C++26)

Technical specifications

External libraries

Date and time library

(C++11)

clock_time_conversion

(C++20)

(C++20)

(C++11)

(C++11)

(C++11)

(C++20)

(C++20)

(C++20)

high_resolution_clock

(C++11)

(C++20)

(C++20)

(C++20)

(C++20)(C++20)

(C++20)(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

weekday

(C++20)

(C++20)

(C++20)

year_month_day_last

(C++20)

year_month_weekday

(C++20)

year_month_weekday_last

(C++20)

weekday_indexed

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

month_weekday_last

(C++20)

(C++20)

(C++20)(C++20)

(C++20)

(C++20)

(C++20)

get_tzdbget_tzdb_listreload_tzdbremote_version

(C++20)(C++20)(C++20)(C++20)

(C++20)

(C++20)

nonexistent_local_time

(C++20)

ambiguous_local_time

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

leap_second_info

(C++20)

get_leap_second_info

(C++20)

C-style date and time

std::chrono::weekday

Member functions

weekday::weekday

weekday::operator++weekday::operator--

weekday::operator+=weekday::operator-=

weekday::c_encodingweekday::iso_encoding

weekday::operator[]

Nonmember functions

operator+operator-

Helper classes

formatter<std::chrono::weekday>

formatter<std::chrono::hash>

(C++26)

Defined in header <chrono>

class weekday;

(since C++20)

inline constexpr std::chrono::weekday Sunday{0};

(since C++20)

inline constexpr std::chrono::weekday Monday{1};

(since C++20)

inline constexpr std::chrono::weekday Tuesday{2};

(since C++20)

inline constexpr std::chrono::weekday Wednesday{3};

(since C++20)

inline constexpr std::chrono::weekday Thursday{4};

(since C++20)

inline constexpr std::chrono::weekday Friday{5};

(since C++20)

inline constexpr std::chrono::weekday Saturday{6};

(since C++20)

The class weekday represent a day of the week in the proleptic Gregorian calendar. Its normal range is [0, 6], for Sunday through Saturday, but it can hold any value in the range [0, 255]. Seven named constants are predefined in the std::chrono namespace for the seven days of the week.

weekday is a TriviallyCopyable StandardLayoutType.

Contents

[edit] Member functions

constructs a weekday
(public member function) [edit]

operator++operator++(int)operator--operator--(int)

increments or decrements the weekday
(public member function) [edit]

operator+=operator-=

adds or subtracts a number of days
(public member function) [edit]

c_encodingiso_encoding

retrieves the stored weekday value
retrieves ISO 8601 weekday value
(public member function) [edit]

checks if the stored weekday value is valid
(public member function) [edit]

convenience syntax for constructing a weekday_indexed or weekday_last from this weekday
(public member function) [edit]

[edit] Nonmember functions

(C++20)

compares two weekday values
(function) [edit]

operator+operator-

(C++20)

performs arithmetic on weekdays
(function) [edit]

(C++20)

outputs a weekday into a stream
(function template) [edit]

(C++20)

parses a weekday from a stream according to the provided format
(function template) [edit]

[edit] Helper classes

std::formatter<std::chrono::weekday>

(C++20)

formatting support for weekday
(class template specialization) [edit]

std::hash<std::chrono::weekday>

(C++26)

hash support for std::chrono::weekday
(class template specialization)

[edit] Example

Run this code

#include <chrono>
#include <iostream>
 
int main()
{
 std::chrono::weekday x{42 / 13};
 std::cout << x++ << '\n';
 std::cout << x << '\n';
 std::cout << ++x << '\n';
}

Output:

Wed
Thu
Fri

[edit] See also

weekday_indexed

(C++20)

represents the n^th weekday of a month
(class) [edit]

Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/chrono/weekday&oldid=157857"