• mm (6/6) Feb 09 2006 I was looking through the speed comparison results and noticed that comp...
• Dave (4/10) Feb 09 2006 Basically I think it comes down to the implementations of the regex libr...

mm <mm_member pathlink.com> writes:

I was looking through the speed comparison results and noticed that compilers
like C C++ and D all kinda fail the regex-dna bench, while fortan perl and
python have no problems with it. 

http://shootout.alioth.debian.org/benchmark.php?test=regexdna&lang=all

Why this enormous difference?
(sorry if this is a really n00b question)

Dave <Dave_member pathlink.com> writes:

In article <dsglr5$2o1q$1 digitaldaemon.com>, mm says...
I was looking through the speed comparison results and noticed that compilers
like C C++ and D all kinda fail the regex-dna bench, while fortan perl and
python have no problems with it. 

http://shootout.alioth.debian.org/benchmark.php?test=regexdna&lang=all

Why this enormous difference?
(sorry if this is a really n00b question)

Basically I think it comes down to the implementations of the regex library
substitution functions for the scripting languages.. Or in the case of Fortran,
261 lines of hand-optimized 'custom' code.