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Re: Using += in array context

by jeroenes (Priest)
on Jun 05, 2001 at 18:18 UTC ( #85818=note: print w/ replies, xml ) Need Help??

in reply to Using += in array context

At first, I was tempted to overload +=, but than I realised that was not going to work, as hashes don't have any garanteed order.

So you really have to stick with the code you already have. Hmm. You always can write a sub, which names the function out loud:

sub add_hash_slice{ my $slice = shift or return undef; my $hash1 = shift or return undef; my $hash2 = shift or return $hash1; $hash1->{$key} += $hash2->{$key} for my $key( @$slice ); return $hash1; } #call add_hash_slice( \@fields, \%totals, \%delta);
Alternativeley, if you have only values in the 'table', you can load it into PDL.
use PDL; my $a = pdl $AoA; $total1=sum($a->(':,0'));
Hope this helps

"We are not alone"(FZ)

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