红宝石 |日期+方法
Date#+()是一个 Date 类方法,它将一个数值添加到日期并返回一个指向 self 之后其他日期的日期对象。
Syntax: Date.+()
Parameter: Date values
Return: date object pointing other days after self after adding a numeric value to the date.
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 : 2019-01-02
Date b + form : 2001-04-09
Date c + form : 2019-01-14
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 : 2019-01-02
Date b + form : 2019-12-08
Date c + form : 2019-02-04