From: Fritzek <fritz.thielemann@...>
Date: 2008-09-19T22:42:16+09:00
Subject: Re: short regexp question

Hi Robert

thanks for explanation and book hint. will search for it.
Fritzek

On 19 Sep., 15:23, Robert Klemme <shortcut...@googlemail.com> wrote:
> 2008/9/19 Fritzek <fritz.thielem...@googlemail.com>:
>
> > thanks for your objection, but could you shortly explain the
> > difference (for regexp dummies like me)?
>
> Ideally you read "Mastering Regular Expressions" which explains such
> topics very nicely.
>
> I believe it is generally better to be more specific about what is to
> match (mainly for robustness reasons).  Also, with the reluctant
> quantifier for every character in the input a match against the next
> sub pattern needs to be tested OR there needs to be backtracking to
> find out whether there is a shorter match afterwards.  Both seem not
> very efficient.  Granted, this is no hard evidence, but if you are
> curious I suggest you do some benchmarks and read the book; it's
> really good!
>
> Kind regards
>
> robert
>
> --
> use.inject do |as, often| as.you_can - without end