Re^2: Making a hash of arrays from a while loop

Yes, but it doesn't store the values, (as far as I can tell---otherwise I'll post my code and see what else stupid I am doing wrong!) it stores a reference to the array, so when the array is recalculated, doesn't the reference point to the new value of the array?

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Those are my principles. If you don't like them I have others.
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Comment on Re^2: Making a hash of arrays from a while loop

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Re^3: Making a hash of arrays from a while loop by moritz (Cardinal) on Mar 04, 2008 at 09:42 UTC
You're right, and the workaround is to create a new array: `$hash{$key} = [ @array ];` [download] If there are references inside the array, you'll need somthing like Storable::dclone.	[reply] [d/l]
Re^4: Making a hash of arrays from a while loop by why_bird (Pilgrim) on Mar 04, 2008 at 09:47 UTC
Ahh, that's what I was trying to do---I couldn't figure out how to make an anonymous array like that. Thankyou v much! ........ Those are my principles. If you don't like them I have others. -- Groucho Marx .......	[reply]
Re^3: Making a hash of arrays from a while loop by wfsp (Abbot) on Mar 04, 2008 at 12:40 UTC
Or declare `@array` within the while loop. This avoids making a copy of the array to make the anonymous reference. `#!/usr/bin/perl use strict; use warnings; use Data::Dumper; $Data::Dumper::Indent = 1; my %hash; while (my $rec = <DATA>){ chomp $rec; # declare the array my ($key, @array) = split(/ /, $rec, 2); $hash{$key} = \@array; } print Dumper \%hash; __DATA__ 1 2 3 4 5 6 7 8` [download] `$VAR1 = { '1' => [ '2 3 4' ], '5' => [ '6 7 8' ] };` [download]	[reply] [d/l] [select]


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