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Retrieve hash between two subroutines in Perl

+1 vote
366 views

I would retrieve my hash table when i pass it in argument at a function. In my case, function1 return my hash table, then i pass my hash table in argument to my function2 and in my function2 i would retrieve my hash table for browse it.

sub function1{
    my code;
    return %hash;
}

sub function2{
    my %hash=$_[0];
    my code browse my hash;
}

my %hash = function1();
function2(%hash);

I have the following error : Odd number of elements in hash assignment at

posted Mar 20, 2013 by Salil Agrawal

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1 Answer

0 votes

You are only pulling in the first element of a list into a hash (i.e. an even sized list, hence the warning). Try this:

sub function1{
    my code;
    return %hash;
}

sub function2{
    my (%hash) = @_;
    my code browse my hash;
}

my %hash = function1();
function2(%hash);

You can get what you want with a hashref:

sub function1{
    my code;
    return \%hash;
}

sub function2{
    my $hash_ref=$_[0];
    my code browse my hash;
}

my $hash_ref = function1();
function2($hash_ref);
answer Mar 20, 2013 by Nora Jones
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