From: Martin DeMello <martindemello@...>
Date: 2008-08-21T07:07:31+09:00
Subject: Re: "num in [1,2,3,4]" in a cool way?

On Wed, Aug 20, 2008 at 2:32 PM, Iņaki Baz Castillo <ibc@aliax.net> wrote:
> Hi, AFAIK in Ruby the only (or the "coolest") way to do something as:
>
>  if num in [1,2,3,4]
>
> is by doing:
>
>  if [1,2,3,4].index(num)
>
> Is it? any other "cooler" way? Thanks.


class Object
  def in? (other)
    other.respond_to?("include?") && other.include?(self)
  end
end

num.in? [1,2,3,4]

martin