From: Jean-Julien Fleck <jeanjulien.fleck@...>
Date: 2010-04-11T08:33:52+09:00
Subject: Re: Detect if 2 ranges share elements

Hello Derek

2010/4/11 Derek Cannon <novellterminator@gmail.com>:
> 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?

I don't know if it's the best but it should be working at least

def have_common?(r1,r2)
  arr = r1.to_a & r2.to_a
  !arr.empty?
end

have_common?(1..10,9..15)
have_common?(1..10,11..20)

Cheers,

-- 
JJ Fleck
PCSI1 Lycée Kléber