红宝石 |日期 ===函数

Date#===()是一个 Date 类方法，它检查两个 Date 对象是否相等。

Syntax: Date.===()

Parameter: Date values

Return: true if two date objects are equal otherwise return false

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 === b}\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 : false

Date b === form : true

Date c === form : false

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 === b}\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 : false

Date b === form : true

Date c === form : false