Hi Mark, There's huge differences in how regex implementations perform in different languages. For example: http://raid6.com.au/~onlyjob/posts/arena/
Perl outperforms everything in that test. I've never assumed that LC's "perl compatiable regex library" is going to perform at the speed which actual Perl performs. I've always assumed that being "perl compatible" just meant that all syntactically-correct Perl regexs should run with LC's implementation, without needing any kind of change in how the regex is formatted. There was an academic paper I came across 15 years ago, which showed that Tcl out-performed Perl. Now it seems Perl outperforms Tcl, suggesting that one or the other has made changes to their underlying engine which impact regex performance. Or that the tests I read about 15 years ago were just testing regex features which resulted in Tcl out-performing Perl, and vice-versa in the above test. It would be great if LC's implementation was as fast as Perl's. Here's a page comparing several implementations of PCRE (with some non-pcre regex implementations): http://sljit.sourceforge.net/regex_perf.html One of the things we had in LC5 which was phenomenally fast, was searching through the styledText of a field. That fast way of searching particular text structures got lost in the migration to LC8. Regards Bernard _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
