From: James Edward Gray II <james@...>
Date: 2006-02-22T22:53:51+09:00
Subject: Re: A regexp for an include? method

On Feb 22, 2006, at 6:52 AM, Boucher, Eric wrote:

> Hi,
>
> I want to see if a certain pattern is inside an array. I tried:
> myArray.flatten.include?(/myPattern/)
>
> but it always return false. Why? Is it because the "include?"  
> doesn't takes
> regular expressions?
> Here's another example that I tried inside an irb session:
>
> data = ["TC_TP1", "TC_TP2", "TC_TP3"]
> =>["TC_TP1", "TC_TP2", "TC_TP3"]
> data.include?(/TC_TP/)
> => false
> data.include?(/TC_TP.*/)
> => false
> data.include?(/TC_TP1/)
> => false
> data.include?("TC_TP1")
> => true !!!

You can use grep() for this:

 >> data = ["TC_TP1", "TC_TP2", "TC_TP3"]
=> ["TC_TP1", "TC_TP2", "TC_TP3"]
 >> data.grep(/TC_TP/)
=> ["TC_TP1", "TC_TP2", "TC_TP3"]
 >> !data.grep(/TC_TP/).empty?
=> true

Hope that gives you some fresh ideas.

James Edward Gray II