std::chrono::operator+, std::chrono::operator- (std::chrono::year_month_weekday_last)

 

C++

Language

Standard Library Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

 

Utilities library

Type support (basic types, RTTI, type traits)
Dynamic memory management
Error handling
Program utilities
Variadic functions
Library feature-test macros
Date and time
Function objects
Formatting library (C++20)
initializer_list (C++11)
source_location (C++20)
bitset
hash (C++11)
integer_sequence (C++14)
Relational operators (deprecated in C++20)
rel_ops::operator!=rel_ops::operator>rel_ops::operator<=rel_ops::operator>=
Comparisons (C++20)
three_way_comparablethree_way_comparable_with
strong_ordering weak_ordering partial_ordering common_comparison_category compare_three_way_result compare_three_way	strong_order weak_order partial_order compare_strong_order_fallback compare_weak_order_fallback compare_partial_order_fallback	is_eqis_neqis_ltis_lteqis_gtis_gteq
Common vocabulary types
pair tuple (C++11) apply (C++17) make_from_tuple (C++17)	optional (C++17) any (C++17) variant (C++17)
Swap, forward and move
swap
exchange (C++14)
forward (C++11)
move (C++11)
move_if_noexcept (C++11)
Elementary string conversions
to_chars (C++17)
from_chars (C++17)
chars_format (C++17)
Type operations
declval (C++11)
as_const (C++17)
launder (C++17)

 

Date and time utilities

duration (C++11) time_point (C++11) time_of_day (C++20)	clock_time_conversion (C++20) clock_cast (C++20)
Clocks
system_clock (C++11) steady_clock (C++11) high_resolution_clock (C++11) is_clock (C++20)	utc_clock (C++20) tai_clock (C++20) gps_clock (C++20) file_clock (C++20) local_t (C++20)
Calendars
day (C++20) month (C++20) year (C++20) weekday (C++20) operator/ (C++20) year_month_day (C++20) year_month_day_last (C++20) year_month_weekday (C++20) year_month_weekday_last (C++20)	weekday_indexed (C++20) weekday_last (C++20) month_day (C++20) month_day_last (C++20) month_weekday (C++20) month_weekday_last (C++20) year_month (C++20)
Time zones
tzdb (C++20) tzdb_list (C++20) get_tzdbget_tzdb_listreload_tzdbremote_version (C++20)(C++20)(C++20)(C++20)	time_zone (C++20) locate_zone (C++20) current_zone (C++20) zoned_time (C++20) link (C++20) leap (C++20)
C-style date and time

 

std::chrono::year_month_weekday_last

Member functions

year_month_weekday_last::year_month_weekday_last

year_month_weekday_last::operator+=year_month_weekday_last::operator-=

year_month_weekday_last::yearyear_month_weekday_last::monthyear_month_weekday_last::weekdayyear_month_weekday_last::weekday_last

year_month_weekday_last::operator sys_daysyear_month_weekday_last::operator local_days

year_month_weekday_last::ok

Nonmember functions

operator==

operator+operator-

operator<<

Helper classes

formatter<std::chrono::year_month_weekday_last>

 

constexpr std::chrono::year_month_weekday_last operator+(const std::chrono::year_month_weekday_last& ymwdl,           const std::chrono::months& dm) noexcept;		(since C++20)
constexpr std::chrono::year_month_weekday_last operator+(const std::chrono::months& dm,           const std::chrono::year_month_weekday_last& ymwdl) noexcept;		(since C++20)
constexpr std::chrono::year_month_weekday_last operator+(const std::chrono::year_month_weekday_last& ymwdl,           const std::chrono::years& dy) noexcept;		(since C++20)
constexpr std::chrono::year_month_weekday_last operator+(const std::chrono::years& dy,           const std::chrono::year_month_weekday_last& ymwdl) noexcept;		(since C++20)
constexpr std::chrono::year_month_weekday_last operator-(const std::chrono::year_month_weekday_last& ymwdl,           const std::chrono::months& dm) noexcept;		(since C++20)
constexpr std::chrono::year_month_weekday_last operator-(const std::chrono::year_month_weekday_last& ymwdl,           const std::chrono::years& dy) noexcept;		(since C++20)

1-2) Adds dm.count() months to the date represented by ymwdl. The result has the same year() and month() as std::chrono::year_month(ymwdl.year(), ymwdl.month()) + dm and the same weekday() as ymwdl.

3-4) Adds dy.count() years to the date represented by ymwdl. The result is equivalent to std::chrono::year_month_weekday_last(ymwdl.year() + dy, ymwdl.month(), ymwd.weekday_last()).

5) Subtracts dm.count() months from the date represented by ymwdl. Equivalent to ymwdl+ -dm.

6) Subtracts dy.count() years from the date represented by ymwdl. Equivalent to ymwdl + -dy.