Ruby | Date cwyear() function

Date#cwyear() is a Date class method which returns the calendar week based year.

Syntax: Date.cwyear()

Parameter: Date values

Return: the calendar week based year.

Example #1 :

# Ruby code for Date.cwyear() 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"


# cwyear form
puts "Date a cwyear form : #{a.cwyear}\n\n"
puts "Date b cwyear form : #{b.cwyear}\n\n"
puts "Date c cwyear form : #{c.cwyear}\n\n"

Output :

Date a : 2019-01-01

Date b : 2001-04-04

Date c : 2019-01-12



Date a cwyear form : 2019

Date b cwyear form : 2001

Date c cwyear form : 2019

Example #2 :

# Ruby code for Date.cwyear() 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"


# cwyear form
puts "Date a cwyear form : #{a.cwyear}\n\n"
puts "Date b cwyear form : #{b.cwyear}\n\n"
puts "Date c cwyear form : #{c.cwyear}\n\n"

Output :

Date a : 2019-01-01

Date b : 2019-12-03

Date c : 2019-02-02



Date a cwyear form : 2019

Date b cwyear form : 2019

Date c cwyear form : 2019