How can I convert an array of n elements to a hash with those n elements as keys?

Like so

my @array = qw( foo bar baz quux );
my %hash  = map { $_ => 1 } @array;
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Will it work or removing elements while running on the hash can cause problems of some sort?

You need to change

delete($key);
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to

delete($myhash{$key});
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And assuming isPassTest() is performing the tests correctly it should work fine, although you will need to exit the loop at some point e.g last if 0 == keys %myhash;
HTH

_________
broquaint