[fpc-pascal] How to split file of whitespace separated numbers?

Sven Barth pascaldragon at googlemail.com
Fri Dec 23 14:06:50 CET 2016

Am 23.12.2016 12:54 schrieb "Graeme Geldenhuys" <
mailinglists at geldenhuys.co.uk>:
> On 2016-12-23 08:14, Bo Berglund wrote:
> > Is there a quick way to split a string of whitespace separated values
> > into the separate members?
> That problem is perfectly suited for regular expressions. And a rather
> simple one at than. The FPC's FCL packages include a regex unit too
> which should suite your needs.
> http://www.regex101.com/
> http://www.regexplained.co.uk/
> http://regex.info/
>   Even the trial book (first chapter only) of "Mastering Regular
>   Expressions" is invaluable for users new to regex. And will
>   explain all you need to know to solve your problem.

Regular expressions usually have a higher overhead however (as you might
have noticed, Bo timed his code later on).
For example at work I changed a regular expression based parser for the
lines of a log file to a simpler one and the speedup was noticeable (I
don't have exact numbers anymore however).

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