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#!/usr/bin/perl

...
filterExclude( \@ar, \%config );

use Data::Dump 'dd'; dd { ar => \@ar, config => \%config };

{
  ar => [1, 2, 4 .. 7, 9, 10],
  config => { 3 => { Exclude => 1 }, 8 => { Exclude => 1 } },
}