From: Rob Biedenharn <Rob@...>
Date: 2007-01-24T02:41:05+09:00
Subject: Re: Using Regular Expressions in Arrays


On Jan 23, 2007, at 12:29 PM, JT Kimbell wrote:

> Hey everyone,
>
> Right now I have an array of terms and I want to delete/find a term
> using pattern matching.
>
> For example, I have the following array (this is a very simple  
> example).
>
> x = ["dog", "cat", "moose"]
>
> x.include?(/dog/) returns false.
>
> Now, I understand regular expressions, and can usually get one that
> works, but perhaps I am using them wrong in ruby?
>
> Anyway, my question is if I can use regex to find an array element(s)?
>
> Thanks,
>
> JT

Take a look at Array#grep (which is really Enumerable#grep)

 >> x = ["dog", "cat", "moose"]
=> ["dog", "cat", "moose"]
 >> x.grep(/dog/)
=> ["dog"]
 >> x << "frog"
=> ["dog", "cat", "moose", "frog"]
 >> x.grep(/og/)
=> ["dog", "frog"]

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob@AgileConsultingLLC.com