From: Intransition <transfire@...>
Date: 2010-04-11T08:31:46+09:00
Subject: Re: Detect if 2 ranges share elements



On Apr 10, 7:13 pm, Derek Cannon <novelltermina...@gmail.com> wrote:
> Probably a simple problem for most of you out there:
>
> What is the best way to make sure two ranges don't share any elements?
>
> For example:
>
> [1..10] and  [9..15] => false (they share common elements)
> [1..10] and [11..20] => true (they are both unique)

Checkout Facets' Range#overlap

  >> require 'facets/range/overlap'
  => true
  >> (1..10).overlap?(9..15)
  => true
  >> (1..10).overlap?(11..20)
  => false