my $defined_x_no_y = grep { defined $_->{x} && !defined $_->{y} } valu
+es %hash;
my $defined_z      = grep { defined $_->{z} } values %hash;

[download]

Note that I used defined and not exists, since you said "defined", but you might have meant "exists" ...

--
edan

In reply to Re: Counting hash of hashes elements by edan
in thread Counting hash of hashes elements by albert

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