Several points.

  1. Perl references are not c pointers.

  2. What is RecursiveFunctionToDeleteValueWithinHash() (whew!) supposed to return? If it is a recursive functions to delete a value within the hash, why does it need to return a *value* at all? That is, shouldn't it just return success or failure?

  3. What do you want this code to do?
       %{$HashData} = undef;      
   %{$HashData} = %{$value};

    [download]
    You are deleting the data refered to by $HashData (and in an unidiomatic way: better to say %$HashData = () if you really want that -- but you don't), and are then populating it with a copy of whatever was (refered to) in $value. Why? If $value has the correct data, why doesn't DeleteValueTreeWithinHash() simply return it? Oh, you want an IN/OUT function? Fine, then why doesn't RecursiveFunctionToDeleteValueWithinHash() really do what it name claims and modify the data referenced by its argument?

  4. Is there a reason why you are using $_[0] and $_[1]? They *can* be used for a tricky way to get in/out function parameters, but that's not always a good idea, and when you're dealing with references anyway, there's hardly any need, anyway. Modify the referenced data; your called will see the changes.

Do yourself a favor and read perlref (or perlreftut) carefully.

In reply to Re: Problems With Hash Pointer Assignments by gaal
in thread Problems With Hash Pointer Assignments by EchoAngel

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