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Re^2: Localizing hash keys in an AoH

by kennethk (Monsignor)
on Mar 15, 2013 at 20:58 UTC ( #1023777=note: print w/ replies, xml ) Need Help??


in reply to Re: Localizing hash keys in an AoH
in thread Localizing hash keys in an AoH

When you localize the array, it's only the array elements that get localized; you still have the original hash refs.

#!/usr/bin/perl use strict; use warnings; use Data::Dumper; our @data = ( {unit => 'S', value => 50, }, {unit => 'T', value => 60, }, {unit => 'Q', value => 70, }, ); LOCAL_BLOCK: { local(@data) = @data; $_->{unit} = 'S' for @data; } print Dumper \@data;
outputs
$VAR1 = [ { 'unit' => 'S', 'value' => 50 }, { 'unit' => 'S', 'value' => 60 }, { 'unit' => 'S', 'value' => 70 } ];

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.


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