From: "David A. Black" <dblack@...>
Date: 2005-01-29T20:43:28+09:00
Subject: Re: string extraction

Hi -

On Sat, 29 Jan 2005, David A. Black wrote:

> Hi --
>
> On Sat, 29 Jan 2005, Navindra Umanee wrote:
>
>> Hi,
>> 
>> I have strings of the form:
>> 
>> string='.///root/1068663688//1068824962/1068836207//1068932537///'
>> 
>> Basically, I want to extract the last number in the string.
>> 
>> Right now I'm doing:
>> 
>> string[/(\d*)\/*$/].delete('/')
>> 
>> But I've already matched the digit I want, so the delete is just
>> superfluous work.  How can I extract the number without doing a
>> separate delete?
>
> You can use a negative-width lookahead:

Sorry, too little coffee.  That's zero-width lookahead :-)


David

-- 
David A. Black
dblack@wobblini.net