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Re: chopping lots of characters

by Abigail-II (Bishop)
on Jun 24, 2004 at 12:38 UTC ( #369319=note: print w/replies, xml ) Need Help??


in reply to Re: chopping lots of characters
in thread chopping lots of characters

A quicky test shows that 3-arg substr is faster than chop, but a 4-arg substr is even faster - and that's to be expected because it saves a copy. Differences aren't dramatic though.
#!/usr/bin/perl use strict; use warnings; use Benchmark qw /cmpthese/; chomp (our @strings = <DATA>); cmpthese -5 => { chop => 'my @copy = @strings; foreach my $str (@copy) { chop $str; chop $str; chop $str; chop $str; }', substr3 => 'my @copy = @strings; foreach my $str (@copy) { $str = substr $str => 0, -4; }', substr4 => 'my @copy = @strings; foreach my $str (@copy) { substr $str => -4, 4 => ""; }', }; __DATA__ asdfjas;dfjas;dfjas;dkfjasdfasdf asd sdfajsd;flaks Rate chop substr3 substr4 chop 152166/s -- -11% -14% substr3 170187/s 12% -- -4% substr4 176800/s 16% 4% --

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[ambrus]: No, you're not doing anything wrong. It's just that our automatic spam filters confuse you with the spammers who post advertisments for online shops of counterfeit branded clothing.
[ambrus]: Or unless you left the title field empty or entered a very short title for the node, but then you'd get a message saying that.
[ambrus]: I hope Corion or some other admin is here and can check the logs to see what the problem is.
[mz2255]: I wish I had an online shop but sadly no. The title field definitly wasn't short, had a perl module in the title with 5-6 additional words.
[ambrus]: you can also try to just post again in case it was some intermittent error

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