In code (while using array) ...
use List::MoreUtils qw/ firstidx /;
for my $val ( generate() )
{
my $i;
# Deal w/ "uninitialized variable" warning as appropriate.
while ( -1 < ( $i = firstidx { $_ == $val } @array ) )
{
delete $array[ $i ];
}
}
# Later...
# exists() here would go better with earlier delete(), but
# then would need to generate list of indices.
my @save = grep { defined $_ } @array;
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