From: Sebastian Hungerecker <sepp2k@...>
Date: 2008-08-01T22:19:37+09:00
Subject: Re: Using array.select with grep

David A. Black wrote:
> No, that's not the same.
>
> >> array = %w{ one two three }
>
> => ["one", "two", "three"]
>
> >> array.grep(/e/)
>
> => ["one", "three"]

array.grep("e")
=> []

So since the code in question only deals with strings and not regexen, using 
include? does indeed have the same result as checking whether grep returned 
an empty array.

HTH,
Sebastian
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