From: Jared Richardson <jared-richRMV-THSardson@...>
Date: 2006-11-20T06:45:06+09:00
Subject: Re: test content string with regex


"Luca Scaljery" <lcalje@gmail.com> wrote in message 
news:30fcaa110523581c1bf28e6b984118ba@ruby-forum.com...
> Hi All
>
> I just tried to test the content of a string, something like this:
>
>
> c = "1234AA"
>
> if c.scan( /1234567890/ )
>   p "OK"
> else
>   p "NO"
> end
>
>
> This always returns "OK" :(
>
> Any suggestions what goes wrong here. And is this the way to check the
> content of a string ?
>
> Thanks a lot
> LuCa
>
> -- 

because of this

irb(main):008:0> a=c.scan( /1234567890/ )
=> []

c.scan is returning an empty array, not nil, so your 'if' statement passes.

I prefer to do a regex for what you seem to be trying to do.

if (c =~(/1234567890/ )) then

or if((index=c=~/23211/)) then

=~ returns nil for no match. Otherwise you get the index of the content.

Jared
http://jaredrichardson.net