Ruby中的DateTime.parse（）是否依赖于语言环境？ [英] Is DateTime.parse() in Ruby dependent on locale?

问题描述

我想知道以下示例的输出：
解析 01/03 时，将其解析为 Mar ，1st 或 Jan，3rd ？

I'm wondering regarding the output of the following example: when parsing 01/03, will it be resolved as Mar, 1st or Jan, 3rd?

推荐答案

< Ruby不依赖于语言环境。由于Ruby是服务器端语言，而不是JavaScript等客户端语言，因此Ruby使用来自您的网络应用服务器的系统时钟-并使用此信息来计算时间。

Ruby is not locale dependent. Because Ruby is a server-side language and not a client-side language like JavaScript, Ruby uses the system clock from your web app server - and uses this information to calculate the time. Whatever timezone you have your system set to is what your Ruby app will use.

从字符串中解析日期时， DateTime 将根据输入的格式进行最佳猜测：

When parsing a date from a string, DateTime will make its best guess based on how the input is formatted:

DateTime.parse('01/03')
#=> Thu, 03 Jan 2019 00:00:00 +0000

DateTime.parse('2019/01/03')
#=> Thu, 03 Jan 2019 00:00:00 +0000

DateTime.parse('01/03/2019')
#=> Fri, 01 Mar 2019 00:00:00 +0000

您也可以明确地 tell DateTime 如何使用 strptime 解析字符串：

You can also explicitly tell DateTime how you want your string parsed using strptime:

date = '01-03-2019'

DateTime.strptime(date, '%m-%d-%Y')
#=> Thu, 03 Jan 2019 00:00:00 +0000

DateTime.strptime(date, '%d-%m-%Y')
#=> Fri, 01 Mar 2019 00:00:00 +0000

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