比较卢阿的日期 [英] Compare dates in Lua

问题描述

我有一个带有日期表的变量

I have a variable with a date table that looks like this

* table:
 [day]
  * number: 15
 [year]
  * number: 2015
 [month]
  * number: 2

如何获取当前日期和上述日期之间的日期？非常感谢！

How do I get the days between the current date and the date above? Many thanks!

推荐答案

您可以使用 os.time（）来将您的表转换为秒并获取当前时间，然后使用 os.difftime（）计算差异。有关更多详细信息，请参见 Lua Wiki 。

You can use os.time() to convert your table to seconds and get the current time and then use os.difftime() to compute the difference. see Lua Wiki for more details.

reference = os.time{day=15, year=2015, month=2}
daysfrom = os.difftime(os.time(), reference) / (24 * 60 * 60) -- seconds in a day
wholedays = math.floor(daysfrom)
print(wholedays) -- today it prints "1"

正如@ barnes53指出的那样，一天之内可能会关闭几秒钟，所以并不理想，但这可能足以满足您的需求。

as @barnes53 pointed out could be off by one day for a few seconds so it's not ideal, but it may be good enough for your needs.

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