用于转换日期时间格式和货币的通用工具或库。 [英] Common Tool or Library for converting Date-Time Formats and currency.

问题描述

我正在寻找一个支持从一种日期时间格式转换为另一种格式的库。

我们应该能够提供日期时间字符串和所需格式作为输入字符串。

类似的库应该支持货币转换。

如果有任何此类库可用，请提供建议和帮助。

解决方案

查看 ICU [ ^ ]。

对于日期时间，您可能还会考虑< a href =http://www.boost.org/doc/libs/1_39_0/doc/html/date_time.html> Boost.Date_Time [ ^ ]。

C ++包括对两种类型的时间操作：

计时库，灵活的类型集合，可以跟踪不同程度的预测ision（例如std :: chrono :: time_point）。

C风格的日期和时间库（例如std :: timechrono库



计时库定义了三种主要类型（持续时间，时钟和时间点）以及实用功能和常见的typedef。



持续时间



持续时间由一段时间组成，定义为某个时间单位的某些滴答数。例如，42秒可以由一个由1秒时间单位的42个滴答组成的持续时间表示。

在标题中定义< chrono>

在命名空间中定义std :: chrono

持续时间



（C ++ 11）



a时间间隔

（课程模板）



时钟



时钟由起点（或纪元）和刻度率组成。例如，时钟可能有一个时代1970年1月1日，每秒钟滴答.C ++定义了三种时钟类型：

定义在标题< chrono>

在命名空间std :: chrono中定义

system_clock



（C ++ 11）



来自全系统实时时钟的挂钟时间

（等级）

steady_clock



（C ++ 11）



永远无法调整的单调时钟

（上课）



high_resolution_clock



（C ++ 11）



时间最短的时钟可用

（上课）



时间点



时间点是自特定时钟的纪元以来经过的持续时间。

在标题< chrono>中定义。

在命名空间中定义std :: chrono

time_point



（C ++ 11）



a时点

（课堂模板）





C风格的日期和时间库



还提供了C风格的日期和时间函数，例如std :: time_t，std :: difftime和CLOCKS_PER_SEC

Hi,

I am looking for a Library which supports conversion from One Date-Time Format to another format.
We should be able to provide Date-time string and Desired Format as an input string.
Similarly library should support Currency conversion.
If any such library is available please suggest and help.

解决方案

Have a look at ICU[^].
For date-time you might also consider Boost.Date_Time[^].

C++ includes support for two types of time manipulation:
The chrono library, a flexible collection of types that track time with varying degrees of precision (e.g. std::chrono::time_point).
C-style date and time library (e.g. std::timechrono library

The chrono library defines three main types (durations, clocks, and time points) as well as utility functions and common typedefs.

Duration

A duration consists of a span of time, defined as some number of ticks of some time unit. For example, "42 seconds" could be represented by a duration consisting of 42 ticks of a 1-second time unit.
Defined in header <chrono>
Defined in namespace std::chrono
duration

(C++11)

a time interval
(class template)

Clocks

A clock consists of a starting point (or epoch) and a tick rate. For example, a clock may have an epoch of January 1, 1970 and tick every second. C++ defines three clock types:
Defined in header <chrono>
Defined in namespace std::chrono
system_clock

(C++11)

wall clock time from the system-wide realtime clock
(class)
steady_clock

(C++11)

monotonic clock that will never be adjusted
(class)

high_resolution_clock

(C++11)

the clock with the shortest tick period available
(class)

Time point

A time point is a duration of time that has passed since the epoch of specific clock.
Defined in header <chrono>
Defined in namespace std::chrono
time_point

(C++11)

a point in time
(class template)


C-style date and time library

Also provided are the C-style date and time functions, such as std::time_t, std::difftime, and CLOCKS_PER_SEC.

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