Yeah, I know.. you can at least drop a last in there and simplify the loop condition, if you use a while. Or how about a variant on until: 
my $hash_has_undef = do {
     local $_;
     1 until defined or not (undef, $_) = each %hash;
     defined;
};

[download]
Traded the flag variable for a double defined test on the last value fetched from the hash.

Makeshifts last the longest.

In reply to Re^4: One liner to Check and undef hash elements (shortcircuiting) by Aristotle
in thread One liner to Check and undef hash elements by Anonymous Monk

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