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(MeowChow) Re5: Help with number conversion

by MeowChow (Vicar)
on Apr 03, 2002 at 10:15 UTC ( #156274=note: print w/ replies, xml ) Need Help??

in reply to Re: Re: •Re: Re: Help with number conversion
in thread Help with number conversion

You can get a substantial improvement over the builtin sprintf with:

substr "000$num", -3
use strict; use Benchmark qw(cmpthese); my $num = 42; cmpthese (-3, { sprintf => sub { sprintf '%03d', $num }, concat => sub { ('0' x (3 - length $num)).$num }, substr => sub { substr "000$num", -3 }, }); Rate concat sprintf substr concat 244047/s -- -10% -36% sprintf 269956/s 11% -- -29% substr 381628/s 56% 41% --
               s aamecha.s a..a\u$&owag.print

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