From: Robert Klemme <shortcutter@...>
Date: 2009-10-06T05:25:04+09:00
Subject: Re: regex simplifier?

On 10/05/2009 03:27 PM, Ilan Berci wrote:
> Roger Pack wrote:

>> Currently I am somewhat of a novice to regex's.
>> For example, I can't remember what \d means versus \D -- which one is a
>> digit, and which one isn't?

> After you play with it for awhile, it starts to follow a fairly 
> consistent pattern.  :)
> 
> Usually, a capital implies a negation.. for example
> \D  <- NOT a number
> \S  <- NOT a space(like) character
> \W  <- NOT a word character..
> 
> etc..

The fact that there apparently are not many libraries for readable 
regular expressions in use seems to indicate that people are mostly 
using the native syntax of a regexp engine.  Apparently it's not that hard.

Roger, I recommend "Mastering Regular Expressions" - that's a really 
good book on the matter and it covers the topic quite well without 
delving too deep into the theory of formal language.

Kind regards

	robert

-- 
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