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

In reply to Re: converting ana array to a hash by broquaint
in thread converting ana array to a hash by hotshot

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