From: Sean O'Halpin <sean.ohalpin@...>
Date: 2007-11-17T11:51:17+09:00
Subject: Re: Handy method Object#in?

On Nov 13, 2007 3:35 PM, Kamil <kamil.kukura@gmail.com> wrote:
> I wish there would be this simple method in the core:
>
> class Object
>   def in?(an_array)
>     an_array.include?(self)
>   end
> end
>
> Having that it's nice to write:
>
> a = %w(hello world out there)
> puts 'world'.in?(a)
>
> And it works with Interval instance too.
>

It is nice, but I would advise you to profile code that uses it and
ask yourself if it is worth the cost.

Regards,
Sean