Perl 5.6 has really done some good stuff to
.*? -- you can see some proof here:
cmpthese(-3, {
cc => sub { "japhy{japhy}japhy" =~ /{[^}]*}/ },
ds => sub { "japhy{japhy}japhy" =~ /{.*?}/ },
});
Benchmark: running cc, ds, each for at least 3 CPU seconds...
cc: 72937.13/s (n=223917)
ds: 76422.67/s (n=229268)
Rate cc ds
cc 72937/s -- -5%
ds 76423/s 5% --
cmpthese(-3, {
cc => sub { "this is an amazingly long string" =~ /\s[^l]*l/ },
ds => sub { "this is an amazingly long string" =~ /\s.*?l/ },
});
Benchmark: running cc, ds, each for at least 3 CPU seconds...
cc: 91565.26/s (n=282021)
ds: 117002.10/s (n=390787)
Rate cc ds
cc 91565/s -- -22%
ds 117002/s 28% --
It's been optimized when it's followed by a constant string.
_____________________________________________________
Jeff[japhy]Pinyan:
Perl,
regex,
and perl
hacker.
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;
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