Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic

Re^2: Perl regexp matching is slow??

by Aristotle (Chancellor)
on Feb 07, 2007 at 10:05 UTC ( #598722=note: print w/replies, xml ) Need Help??

in reply to Re: Perl regexp matching is slow??
in thread Perl regexp matching is slow??

Of note is that Perl in particular already has safeguards in place to prevent exponential catastrophes. At least for some large class of pathological patterns, it wonít match them very quickly, but neither will it explode in nearly the same way as more naÔve engines. The downside is that the required bookkeeping imposes a performance hit on all matching, which makes Perlís engine slower than that of languages with more naÔve engines, like Java. tilly wrote a great, long article on this subject some time ago.

Makeshifts last the longest.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://598722]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others imbibing at the Monastery: (6)
As of 2019-07-18 09:00 GMT
Find Nodes?
    Voting Booth?

    No recent polls found