$Bill Luebkert wrote: > Rate RE2 RE5 RE3 RE4 RE1 RE1a > RE2 136761/s -- -58% -61% -64% -74% -74% > RE5 326584/s 139% -- -6% -14% -37% -37% > RE3 347705/s 154% 6% -- -9% -33% -33% > RE4 381098/s 179% 17% 10% -- -26% -26% > RE1 516529/s 278% 58% 49% 36% -- -0% > RE1a 516529/s 278% 58% 49% 36% 0% -- > > 1 $str =~ s/\s(?=\s*\S)/0/og; > 1a $str =~ s/\s(?=\s*\S)/0/g; > 2 1 while ($str =~ s/\s(?=(\d|\.))/0/); > 3 $str =~ s/^(\s+)(?=\d)/'0' x (length $1)/e; > 4 $str =~ s/^(\s+)/sprintf "%s", q[0]x length($1)/eg; > 5 $str =~ s/ (?=.*\d)/0/g;
What surprises me is the substantial difference between the lookahead expressions, RE1a and RE5. Can anyone explain why there's such a difference? - Mark. _______________________________________________ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
