Check if Ranges overlap.

Methods
Public Instance methods
overlaps?(other)

Compare two ranges and see if they overlap eachother 

 (1..5).overlaps?(4..6) # => true
 (1..5).overlaps?(7..9) # => false

[ show source ]

    # File activesupport/lib/active_support/core_ext/range/overlaps.rb, line 9
 9:         def overlaps?(other)
10:           include?(other.first) || other.include?(first)
11:         end