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Re^2: creating and managing many hashes

by poj (Abbot)
on Feb 19, 2018 at 10:27 UTC ( #1209468=note: print w/replies, xml ) Need Help??


in reply to Re: creating and managing many hashes
in thread creating and managing many hashes

This is to determine the pairs only

That should take seconds, not minutes.

#!/usr/bin/perl use strict; my $t0 = time; my @f = map{ sprintf 'product_%04d',$_ } 1..2083; my $count = 0; open OUT,'>','pairs.txt' or die "$!"; while (my $x = shift @f){ for my $y (@f){ ++$count; print OUT "$count\t$x\t$y\n"; } } close OUT; my $dur = time-$t0; print "$count in $dur s\n"; # 19s on raspberryPI
poj

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Re^3: creating and managing many hashes
by Gtforce (Sexton) on Feb 19, 2018 at 10:49 UTC

    poj - that is amazing (took 3 seconds)!!

    Will do a post-mortem now, thanks a ton.

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