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std::chrono::day::operator++, std::chrono::day::operator--

From cppreference.com
< cpp‎ | chrono‎ | day
 
 
Date and time library
(C++11)
(C++20)
(C++11)
(C++11)
(C++11)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)(C++20)
(C++20)(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)(C++20)
(C++20)

 
 
constexpr std::chrono::day & operator++() noexcept;
(1) (since C++20)
constexpr std::chrono::day operator++( int ) noexcept;
(2) (since C++20)
constexpr std::chrono::day & operator--() noexcept;
(3) (since C++20)
constexpr std::chrono::day operator--( int ) noexcept;
(4) (since C++20)

Adds or subtracts 1 from the day value.

1,2) Performs *this += std::chrono::days {1};.
3,4) Performs *this -= std::chrono::days {1};.

[edit] Parameters

(none)

[edit] Return value

1,3) A reference to this day after modification.
2,4) A copy of the day made before modification.

[edit] Notes

If the result would be outside the range [0255], the actual stored value is unspecified.

[edit] Example

Run this code
#include <cassert>
#include <chrono>
 
int main()
{
 std::chrono::day d{15};
 
 ++d;
 assert (d == std::chrono::day (16));
 
 --d;
 assert (d == std::chrono::day (15));
}

[edit] See also

adds or subtracts a number of days
(public member function) [edit]
adds or subtracts a number of days and a day, or find the difference between two days
(function) [edit]
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