Ruby 时间 isdst函数
Time#isdst(): isdst() 是一个时间类方法,用于检查时间是否发生在其时区的夏令时。
语法: Time.isdst()
参数: 时间值
返回: 真 – 如果时间发生在其所在时区的夏令时期间,否则返回假。
例子 #1 :
# Ruby code for Time.isdst() method
# declaring time
a = Time.new(2019)
# declaring time
b = Time.new(2019, 10)
# declaring time
c = Time.new(2019, 12, 31)
# Time
puts "Time a : #{a}\n\n"
puts "Time b : #{b}\n\n"
puts "Time c : #{c}\n\n\n\n"
# isdst form
puts "Time a isdst form : #{a.isdst}\n\n"
puts "Time b isdst form : #{b.isdst}\n\n"
puts "Time c isdst form : #{c.isdst}\n\n"
输出:
Time a : 2019-01-01 00:00:00 +0100
Time b : 2019-10-01 00:00:00 +0200
Time c : 2019-12-31 00:00:00 +0100
Time a isdst form : false
Time b isdst form : true
Time c isdst form : false
例子 #2 :
# Ruby code for Time.isdst() method
# declaring time
a = Time.now
# declaring time
b = Time.new(1000, 10, 10)
# declaring time
c = Time.new(2020, 12)
# Time
puts "Time a : #{a}\n\n"
puts "Time b : #{b}\n\n"
puts "Time c : #{c}\n\n\n\n"
# isdst form
puts "Time a isdst form : #{a.isdst}\n\n"
puts "Time b isdst form : #{b.isdst}\n\n"
puts "Time c isdst form : #{c.isdst}\n\n"
输出:
Time a : 2019-08-27 03:48:18 +0200
Time b : 1000-10-10 00:00:00 +0053
Time c : 2020-12-01 00:00:00 +0100
Time a isdst form : true
Time b isdst form : false
Time c isdst form : false