Toolic, I had already read the link you provided (and I am using #strict in my code), but didn't find what I needed. Let me try to ask again, using the examples provided in the link (with a few values changes). Please understand also that I've consulted about six Perl books (3 Llama ones) in search of the answer, so I've spent a fair bit of time on this.) I want to count the number of members of each family named jane. I tried the following code:
#to make this easier to read, HoH is defined below.
my ($group);
for $group ("simpsons","jetsons" ) {
my $janemembers=grep {$_ eq "jane"} values $HoH{$group};
}
The error given is that "Type of arg1 to values must be hash (not hash element). What's going wrong??
%HoH = (
flintstones => {
lead => "fred",
pal => "barney",
},
jetsons => {
lead => "george",
wife => "jane",
kid => "jane",
},
simpsons => {
lead => "homer",
wife => "marge",
kid => "bart",
},
);

In reply to Re^2: How to extract a row or column of two-dimensional hash by PerlKitten
in thread How to extract a row or column of two-dimensional hash by PerlKitten

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