rails/rails — pull request #7350 by slbug (2012-08-14 18:34:39+00:00)
Title: Added ability to compare date/time with infinity

Date, DateTime, Time and TimeWithZone can now be compared to infinity,
so it's now possible to create ranges with one infinite bound and
date/time object as another bound.

Ex.: @range = Range.new(Date.today, Float::INFINITY)

Also it's possible to check inclusion of date/time in range with
conversion.

Ex.: @range.include?(Time.now + 1.year) # => true
@range.include?(DateTime.now + 1.year) # => true

Ability to create date/time ranges with infinite bound is required
for handling postgresql range types.