From: Robert Klemme <bob.news@...>
Date: 2006-02-15T18:28:26+09:00
Subject: Re: Scanning a string for decimal numbers

David Vallner wrote:
> Dňa Utorok 14 Február 2006 19:07 Jeppe Jakobsen napísal:
>> Thank you for clearing things, up for me, but could you explain what
>> the last part of the expression Wilson provided me with means?
>>
>> it's (?=[^\d])

These is equivalent (?=\D)

A negative lookahead might work, too: (?!\d)

> That's a positive zero-width lookahead. I think. Gotta love
> regexspeak.
>
> In English: look for a single character that's not a decimal digit,
> and don't include it in the match.

I'd go with this quite simple regexp

/[-+]?\d+(?:,\d+)?/

If numbers like "1," should be detected, too, then just change the "+" in
the last group to "*".

If one wants to prevent to match numbers with leading zeros then it
becomes more complicated but it seems not be worth the effort in this
case.

Kind regards

    robert