rebol - 日期减法为什么我得不到hh :mm:ss in Rebol/Red?

Question

1°) 我只得到天数，如何同时得到 hh:mm:ss ？

diff: (now - (10-Nov-2017/15:00:00))

6

2°) 获取分钟数最优雅的方法是什么？

Answer 1

1°) I get only the number of days, how to also get the hh:mm:ss ?

为此使用difference 函数:

>> difference now 10-Nov-2017/15:00:00
== 145:19:24

2°) What's the most elegant way to get the number of minutes ?

与任何其他日期值相同的方式:

>> d: difference now 10-Nov-2017/15:00:00
>> d/minute
== 21

或者，您可以使用 pick 来避免将中间日期设置为单词:

>> pick (difference now 10-Nov-2017/15:00:00) 2  ; Red and Rebol2/3
== 21
>> pick (difference now 10-Nov-2017/15:00:00) 'minute ; Rebol3, not yet implemented in Red
== 21