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  1. or download this
    #!/usr/bin/perl
    use warnings;
    ...
    
    my $obj     = 'MyClass'->new(list => [ 1, 2, 3 ]);
    my $invalid = 'MyClass'->new(list => [ 1, 2, 3.14 ]); # Throws as 3.14
    + is not an Int.
    
  2. or download this
    ($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
    }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,