Ruby/Date/next

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next finds the next day but does not change date in-place.

# Add 61 days to a date:
require "date"
date = Date.new( 2006, 11, 8 )
puts (date + 61).to_s



What"s the next day?

require "date"
date = Date.new( 2006, 11, 8 )
date.next.to_s # => "2006-11-09"
Источник — «http://wiki.crossplatform.ru/index.php?title=Ruby/Date/next»