in reply to Re: [RFC] Building Regex Alternations Dynamically
in thread Building Regex Alternations Dynamically
Hi LanX,
Thanks for your comments, I'll think about whether I can provide a TL;DR version - my thought was that impatient users could just copy-n-paste my code :-)
IIRC there is a hard limit for the length of a regex-string
I'm not sure, I'll have to look into it, but I do know this works :-)
my $word_regex = do { open my $wfh, '<:utf8', '/usr/share/dict/words' or die $!; chomp( my @words = <$wfh> ); close $wfh; my $re = join '|', map {quotemeta} sort { length $b <=> length $a or $a cmp $b } @words; qr/$re/i }; print length($word_regex), "\n"; __END__ 964836
Thanks,
-- Hauke D
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Re^3: [RFC] Building Regex Alternations Dynamically
by LanX (Saint) on Jan 18, 2017 at 14:15 UTC |
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