From: Mark Probert <probertm@...>
Date: 2002-09-24T03:21:34+09:00
Subject: Re: another easy one...

At 02:37 AM 9/24/2002 +0900, gminick wrote:
>On Tue, Sep 24, 2002 at 01:09:45AM +0900, Mark Probert wrote:
> > 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"
>Don't know if it is possible to use include? here,
>but you can do this with "=~":
>
>c =~ /[A-Za-z0-9_]/
>
>Returns 0 if true, nil if false.
>HTH.

That was my original thought:

$ cat blah.rb
c = "C"
case c
         when c =~ /[A-Za-z0-9_]/
                 puts "yip!"
         else
                 puts "nope..."
end

$ ruby !$
ruby blah.rb
nope...

$ ruby -v
ruby 1.7.2 (2002-07-02) [i386-mswin32]



-mark.