From: as <nosp@...>
Date: 2009-04-30T20:15:31+09:00
Subject: Re: find if an array has any element present in another array

Le Thu, 30 Apr 2009 12:57:23 +0200,
as <nosp@m.invalid> a 辿crit :

> Le Thu, 30 Apr 2009 05:52:26 -0500,
> Charanya Nagarajan <charanya.nagarajan@tcs.com> a 辿crit :
> 
> > I have 2 lists
> > 
> > a=[1,2,3,4]
> > b=[2,4,6,7,8]
> > 
> > I want to find if there are any elements present in "a" which are
> > also present in "b".
> > I jus wanna "true" or "false" answer if both of the arrays have any
> > element in common.
> 
> (a-b).nil?

Ouch, sorry, (a&b).empty?


-- 
Arnaud Schmittbuhl