Re: multidimensional insertion order

* Spin schrieb:
>
> Alright, let's try again.
> I'm parsing a quasi-xml file into a hash, and here is the code that is
> relevant:

[...]

> tie $xml_lines{$section}->{$section_number}, "Tie::IxHash";

Your $xml_lines{$section}->{$section_number} is just a reference to the
hash. You know about this due to your next line of code:

> $xml_lines{$section}->{$section_number}->{$code_name} = $contents;

You're using Perl's dereferencing operator "->" to access a value of
that reference.

>
> The second tie (in the if statement) is where I get the error "Can't
> locate object method "TIESCALAR" via package "Tie::IxHash" at
> wis_xml_to_html.pl line 56, <XML> line 2."
>
> How do I use Tie::IxHash to maintain the order of insertion in my while
> loop at the {$code_name} level?

Since you don't want to tie a reference [1], you have to tie a hash
instead. Try to dereference the whole hash with "%{}" first:

tie %{ $xml_lines{$section}->{$section_number} }, "Tie::IxHash";

regards,
fabian

[1] A reference is actually stored in a scalar. Thus you get an error
message about "TIESCALAR" (you're trying to tie a scalar and Tie::IxHash
can't do that because it has no mothod named "TIESCALAR"). That's all.
.

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