From: "Peña, Botp" <botp@...>
Date: 2007-11-21T12:34:44+09:00
Subject: Re: is there an nicer way for this expression?

From: Trans [mailto:transfire@gmail.com] 
#   case foo.bar when 1,2 then

hmm ;-)

bar
#=> 1
bar.in? 1,2
#=> 0
bar.in? 1,2,3
#=> 0
bar.in? 2,1,3
#=> 1
bar.in? *[2,1,3]
#=> 1
bar.in? [2,1,3],1,2
#=> 1
[2,1,3].in? [2,1,3],1,2
#=> 0
[2].in? [2,1,3],1,2
#=> nil
{1=>2}.in? [2,1,3],1,2,{1=>2},{2=>4}
#=> 3
bar.in? *(1..2)
#=> 0
bar.in? 3,4,*(1..2)
#=> 2
bar.in? 3,4,*(2..5)
#=> nil

aliased w among, amongst, and one_of (just lately)

kind regards -botp