这实际上或多或少是我会做的,除了可能更简洁一些:
def night?( date )
!("06:00"..."21:00").include?(date.strftime("%H:%M"))
end
或者,如果您的日程安排边界可以保留在整点:
def night?(date)
!((6...21).include? date.hour)
end
请注意...
- 这基本上意味着“白天的时间是 6 点到 21 点,但是不包括21 点。
编辑:这是一个通用的(遗憾的是不太简洁)解决方案:
class TimeRange
private
def coerce(time)
time.is_a? String and return time
return time.strftime("%H:%M")
end
public
def initialize(start,finish)
@start = coerce(start)
@finish = coerce(finish)
end
def include?(time)
time = coerce(time)
@start < @finish and return (@start..@finish).include?(time)
return !(@finish..@start).include?(time)
end
end
您几乎可以像普通范围一样使用它:
irb(main):013:0> TimeRange.new("02:00","01:00").include?(Time.mktime(2010,04,01,02,30))
=> true
irb(main):014:0> TimeRange.new("02:00","01:00").include?(Time.mktime(2010,04,01,01,30))
=> false
irb(main):015:0> TimeRange.new("01:00","02:00").include?(Time.mktime(2010,04,01,01,30))
=> true
irb(main):016:0> TimeRange.new("01:00","02:00").include?(Time.mktime(2010,04,01,02,30))
=> false
请注意,上面的类不了解时区。