红宝石 |日期>>方法
Date#>>()是一个 Date 类方法,它返回指向 self 后几个月的“n”(数值参数)的日期对象。
Syntax: Date.>>()
Parameter: Date values
Return: date object pointing n months after self. The argument n should be a numeric value.
示例 #1:
# Ruby code for Date.>>() method
# loading date
require 'date'
# declaring Date
a = Date.new(2019, 1, 1)
# declaring Date
b = Date.jd(2452004)
# declaring Date
c = Date.ordinal(2019, 12)
# Date
puts "Date a : #{a}\n\n"
puts "Date b : #{b}\n\n"
puts "Date c : #{c}\n\n\n\n"
# >> form
puts "Date a >> form : #{a >> Rational(3, 2)}\n\n"
puts "Date b >> form : #{b >> Rational(10, 2)}\n\n"
puts "Date c >> form : #{c >> Rational(10, 4)}\n\n"
输出 :
Date a : 2019-01-01
Date b : 2001-04-04
Date c : 2019-01-12
Date a >> form : 2019-02-01
Date b >> form : 2001-09-04
Date c >> form : 2019-03-12
示例 #2:
# Ruby code for Date.>>() method
# loading date
require 'date'
# declaring Date
a = Date.parse('2019-01-01')
# declaring Date
b = Date.strptime('03-12-2019', '%d-%m-%Y')
# declaring Date
c = Date.commercial(2019, 5, 6)
# Date
puts "Date a : #{a}\n\n"
puts "Date b : #{b}\n\n"
puts "Date c : #{c}\n\n\n\n"
# >> form
puts "Date a >> form : #{a >> Rational(3, 2)}\n\n"
puts "Date b >> form : #{b >> Rational(10, 2)}\n\n"
puts "Date c >> form : #{c >> Rational(10, 4)}\n\n"
输出 :
Date a : 2019-01-01
Date b : 2019-12-03
Date c : 2019-02-02
Date a >> form : 2019-02-01
Date b >> form : 2020-05-03
Date c >> form : 2019-04-02