Ruby | Date – function

Date#-() is a Date class method which returns the difference between two dates if the object is date type object.

Syntax: Date.-()

Parameter: Date values

Return: difference between two dates

Example #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"

Output :

Date a : 2019-01-01

Date b : 2001-04-04

Date c : 2019-01-12



Date a - form : 2018-12-30

Date b - form : 2001-03-30

Date c - form : 2019-01-09

Example #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"

Output :

Date a : 2019-01-01

Date b : 2019-12-03

Date c : 2019-02-02



Date a - form : 2018-12-30

Date b - form : 2019-11-28

Date c - form : 2019-01-30