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 my $item = $self->grid($x, $y) and push @{$self->{'select'}}, $item

 my $item;
 $item = $self->grid($x, $y) and push @{$self->{'select'}}, $item

 if (my $item = $self->grid($x, $y)) {
   push @{$self->{'select'}}, $item
 }