[Qt-interest] QRegExp for document analysing

[Thiago Macieira]

Em Segunda-feira, 6 de Dezembro de 2010, às 13:59:03, Omar AKHAM escreveu:
> Okay, thank you...So how can I know when to use a regex and when to use
> a normal parser ?

That's easy:
normal parser = always
regexp = never

:-)

For approximate values of "never" and "always" (give or take 5%). A Regular 
Expression will never beat a hand-tuned parser in terms of performance. It 
might be easier to write, though, so it's a point for readability (if the 
regex itself is readable).

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
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