Re^2: Massive expansion of a hash of arrays?

Yes i think im over estimating my data set. Its more like 15 keys but each key will have 2-3 values. Only one of them has 12 values.

how would CrossProduct deal with arrays that you didnt want to expand? One of the end values might be an array. I would want to copy that as is<\p>

Comment on Re^2: Massive expansion of a hash of arrays?

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Re^3: Massive expansion of a hash of arrays? by Cristoforo (Curate) on Jul 19, 2014 at 02:02 UTC
Something like this would prevent one of the arrays from being processed in the cross product. `#!/usr/bin/perl use strict; use warnings; use Set::CrossProduct; my %hash=('ID' => { 'key1' => ['key1_val1', 'key1_val2'], 'key2' => ['key2_val1', 'key2_val2'], 'key3' => ['one', 'two'] } ); for my $id (keys %hash) { my $key3 = delete $hash{$id}{key3}; my @data = values %{ $hash{$id} }; my $cp = Set::CrossProduct->new( \@data ); my $i = 1; while( my $array_ref = $cp->get ) { print join( " ", $id, $i++, @$array_ref ), "\n"; } print "@$key3\n"; }` [download] Prints `ID 1 key2_val1 key1_val1 ID 2 key2_val1 key1_val2 ID 3 key2_val2 key1_val1 ID 4 key2_val2 key1_val2 one two` [download]	[reply] [d/l] [select]

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Re^3: Massive expansion of a hash of arrays?
by Cristoforo (Curate) on Jul 19, 2014 at 02:02 UTC

#!/usr/bin/perl
use strict;
use warnings;
use Set::CrossProduct;

my %hash=('ID' => {
                  'key1' => ['key1_val1', 'key1_val2'],
                  'key2' => ['key2_val1', 'key2_val2'],
                  'key3' => ['one', 'two']
                  }
          );

for my $id (keys %hash) {
    my $key3 = delete $hash{$id}{key3};
    my @data = values %{ $hash{$id} };
    
    my $cp = Set::CrossProduct->new( \@data );
    
    my $i = 1;
    while( my $array_ref = $cp->get ) {
        print join( " ", $id, $i++, @$array_ref ), "\n";
    }
    
    print "@$key3\n";
}
[download]

ID 1 key2_val1 key1_val1
ID 2 key2_val1 key1_val2
ID 3 key2_val2 key1_val1
ID 4 key2_val2 key1_val2
one two
[download]

[reply]
[d/l]
[select]