std::chrono::duration::operator++, std::chrono::duration::operator--

 

C++

語言

概念

實用工具庫

字元串庫

集裝箱庫

演算法庫

迭代器庫

Numerics庫

輸入/輸出庫

本地化庫

正則表達式庫 （C++11）

原子操作庫 （C++11）

線程的支持庫 （C++11）

 

實用工具庫

類型的支持 (basic types, RTTI, type traits)

動態內存管理

錯誤處理

程序實用工具

可變參數函數

日期和時間

函數對象

initializer_list （C++11）

bitset

hash （C++11）

關係運算符 Original: Relational operators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

rel_ops::operator!= rel_ops::operator> rel_ops::operator<= rel_ops::operator>=

雙和元組 Original: Pairs and tuples The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

pair

tuple （C++11）

piecewise_construct_t （C++11）

piecewise_construct （C++11）

掉期，遠期和移動 Original: Swap, forward and move The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

swap

forward （C++11）

move （C++11）

move_if_noexcept （C++11）

declval （C++11）

 

日期和時間工具

time_point （C++11）

duration （C++11）

system_clock （C++11）

steady_clock （C++11）

high_resolution_clock （C++11）

C風格的日期和時間

 

std::chrono::duration

成員函數 Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

duration::duration

duration::operator=

duration::count

duration::zero

duration::min

duration::max

duration::operator+ duration::operator-

duration::operator++ duration::operator--

duration::operator+= duration::operator-= duration::operator*= duration::operator/= duration::operator%=

非成員函數 Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

common_type

operator+ operator- operator* operator/ operator%

operator== operator!= operator< operator<= operator> operator>=

duration_cast

Helper類 Original: Helper classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

treat_as_floating_point

duration_values

 

duration& operator++();	(1)
duration operator++(int);	(2)
duration& operator--();	(3)
duration operator--(int);	(4)

增加或減少這個時間的刻度數.

Original:

Increments or decrements the number of ticks for this duration.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

如果rep_的刻度數的持續時間對象，是一個成員變數

Original:

If rep_ is a member variable holding the number of ticks in a duration object,

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

1)

相當於++rep_; return *this;

Original:

Equivalent to ++rep_; return *this;

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

2)

相當於return duration(rep_++)

Original:

Equivalent to return duration(rep_++)

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

3)

相當於--rep_; return *this;

Original:

Equivalent to --rep_; return *this;

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

4)

相當於return duration(rep_--);

Original:

Equivalent to return duration(rep_--);

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

參數

（無）

Original:

(none)

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

返回值

@ 1,3 @參考這個修改後的時間

Original:

@1,3@ a reference to this duration after modification

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

@ 2,4 @副本的期限前作出修改

Original:

@2,4@ a copy of the duration made before modification

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

為例

#include <chrono>
#include <iostream>
 
int main()
{
    std::chrono::hours h(1);
    std::chrono::minutes m = ++h;
    m--;
    std::cout << m.count() << " minutes\n";
}

Output:

119 minutes

另請參閱

operator+= operator-= operator*= operator/= operator%=	實現複合賦值之間的持續時間 Original: implements compound assignment between two durations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （公共成員函數）
operator+ operator- operator* operator/ operator%	實現了算術運算的時間作為參數 Original: implements arithmetic operations with durations as arguments The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （函數模板）