Use of uninitialized value in string eq

saintex has asked for the wisdom of the Perl Monks concerning the following question:

Hello all, as I told before, I'm newbie in Perl, that I'm studing throw Lama Book. I have an error in an excercise and I don't understand that error: This is the code:

use strict;

sub askName {

    chomp(my $nome=<STDIN>);
    my %nomi=(
        "fred"=>'flinstone',
        "barney"=>'rubble',
        "wilma"=>'flinstone'
    );
    
    for (%nomi) {
        print $_ if ($nomi{$_} eq $nome);
    }
    

}

&askName;
[download]

Why Have I: "Use of uninitialized value in string eq " ?

Comment on Use of uninitialized value in string eq Download Code

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Re: Use of uninitialized value in string eq by FunkyMonk (Bishop) on Feb 20, 2010 at 11:11 UTC
`for (%nomi) {` [download] This will loop over all the keys and values of your hash. What you want is: `for (keys %nomi) {` [download]	[reply] [d/l] [select]
Re^2: Use of uninitialized value in string eq by saintex (Scribe) on Feb 20, 2010 at 12:16 UTC
Thank you for your answer. I understood my error, the unitialized string was the hash value.	[reply]

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