Preserves order of both targetL and origin.
#!/usr/bin/perl
use strict; # https://perlmonks.org/?node_id=11106779
use warnings;
use List::Util qw( uniq );
my @AoH = (
{ count => 1, origin => "AMG", targetL => "foisonnement" },
{ count => 1, origin => "IDBR", targetL => "foisonnement" },
{ count => 1, origin => "IWWF", targetL => "gonfler" },
{ count => 1, origin => "IWWF", targetL => "due" },
{ count => 1, origin => "IWWF", targetL => "due" },
);
my %seen;
my @AoHfinal = grep
{
if( my $prev = $seen{$_->{targetL}} )
{
$prev->{count} += $_->{count};
$prev->{origin} = join ' ', uniq split(' ', $prev->{origin}), $_->
+{origin};
0 # skip duplicate
}
else
{
$seen{$_->{targetL}} = $_;
}
} @AoH;
use Data::Dump 'dd'; dd @AoHfinal;
Outputs:
(
{ count => 2, origin => "AMG IDBR", targetL => "foisonnement" },
{ count => 1, origin => "IWWF", targetL => "gonfler" },
{ count => 2, origin => "IWWF", targetL => "due" },
)
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