From: Mike Stok <mike@...>
Date: 2002-09-24T02:58:56+09:00
Subject: Re: another easy one...

In article <5.1.0.14.2.20020923113822.00b0cea8@zcard04k.ca.nortel.com>,
Mark Probert wrote:

> 
> My brain just isn't working this morn...
> 
> Say, ch is a character and I want to find if it
> exists in a regexp /A-Za-z0-9_/.  How do I do it?
> 
>          irb> c.include?(/A-Za-z0-9_/)
>          "TypeError: cannot convert Regexp into String"
> 
> I can do:
> 
>          irb> c.count("A-Za-z0-9_")
>          1
> 
> And look for a 0 being a non-match.

Is c a one character string?  If so you can say

 %w(a ^ x).each { |c|
   puts "#{c} matches" if c =~ /[A-Za-z0-9_]/   # /\w/ maybe
   puts "#{c} matches" if c.count("A-Za-z0-9_").nonzero?
 }

Hope this helps, (and that I haven't missed your point :-)

Mike

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