红宝石 |日期时间小时()函数
DateTime#hour() : hour()是一个 DateTime 类方法,它从给定的 DateTime 对象返回小时,即从 0 到 23。
Syntax: DateTime.hour()
Parameter: DateTime values
Return: hours i.e. from 0 to 23 from the given DateTime object
示例 #1:
# Ruby code for DateTime.hour() method
# loading library
require 'date'
# declaring DateTime value
date_a = DateTime.new(2019, 8, 10, 4, 10, 9)
# declaring DateTime value
date_b = DateTime.new(2019, 8, 10.5)
# declaring DateTime value
date_c = DateTime.new(2019, 8, 10, 4, 10, 9, Rational(4, 24))
# hour method
puts "DateTime hour form : #{date_a.hour}\n\n"
puts "DateTime hour form : #{date_b.hour}\n\n"
puts "DateTime hour form : #{date_c.hour}\n\n"
输出 :
DateTime hour form : 4
DateTime hour form : 12
DateTime hour form : 4
示例 #2:
# Ruby code for DateTime.hour() method
# loading library
require 'date'
# declaring DateTime value
date_a = DateTime.new(2019, 8, 10, 5)
# declaring DateTime value
date_b = DateTime.parse('10 Aug 2018 04:10:06+04:30')
# declaring DateTime value
date_c = DateTime.new(2019, 8, 10, 4, 10, 9, '+03:00')
# hour method
puts "DateTime hour form : #{date_a.hour}\n\n"
puts "DateTime hour form : #{date_b.hour}\n\n"
puts "DateTime hour form : #{date_c.hour}\n\n"
输出 :
DateTime hour form : 5
DateTime hour form : 4
DateTime hour form : 4