in reply to multi dimensional hash
Make the "variants" an array and push items onto it. Then sift out unique values once all the data has been read.
use strict; use warnings; use Data::Dumper; open my $inFH, q{<}, \ <<EOD or die $!; The DT the International NN International for IN for well NN well preparation NN preparation preparation NN preparation in IN in conference NN conference conference NN conference conferences NN conference good VVG good EOD do { my $discard = <$inFH> }; my %hash; while ( <$inFH> ) { my @tags = split; next unless $tags[ 1 ] eq q{NN}; $hash{ $tags[ 2 ] }->{ frequency } ++; push @{ $hash{ $tags[ 2 ] }->{ variants } }, $tags[ 0 ]; } @{ $hash{ $_ }->{ variants } } = do { my %seen; grep { not $seen{ $_ } ++ } @{ $hash{ $_ }->{ variants } }; } for keys %hash; print Data::Dumper->Dumpxs( [ \ %hash ], [ qw{ *hash } ] );
The output.
%hash = ( 'preparation' => { 'frequency' => 2, 'variants' => [ 'preparation' ] }, 'conference' => { 'frequency' => 3, 'variants' => [ 'conference', 'conferences' ] }, 'well' => { 'frequency' => 1, 'variants' => [ 'well' ] }, 'International' => { 'variants' => [ 'International' ], 'frequency' => 1 } );
I hope this is helpful.
Update: Perhaps simpler would be to keep a ->{ seen }->{ $tags[ 0 ] } sub-sub-HoH to filter out duplicates and delete it at the end.
... while ( <$inFH> ) { my @tags = split; next unless $tags[ 1 ] eq q{NN}; $hash{ $tags[ 2 ] }->{ frequency } ++; push @{ $hash{ $tags[ 2 ] }->{ variants } }, $tags[ 0 ] unless $hash{ $tags[ 2 ] }->{ seen }->{ $tags[ 0 ] } ++; } delete $hash{ $_ }->{ seen } for keys %hash; ...
Cheers,
JohnGG
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Re^2: multi dimensional hash
by AnomalousMonk (Archbishop) on Mar 04, 2018 at 01:33 UTC | |
by johngg (Canon) on Mar 04, 2018 at 10:00 UTC |
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