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Postings from November 2010
Hi,
This is list is for the development of Perl itself. For help with
developing in Perl, try perlmonks.org in the future.
> I'm having trouble understanding the difference
> between @{ $AoA[0] } = @array and $AoA[0] = [ @array ]
[] creates an array and a reference to that array. In the former,
you're assigning to an existing array. Thanks to autovivification, the
array will be created if it doesn't already exist.
> Am I missing something in interpreting this as a
> technique to save storage and nothing more?
It doesn't save storage. The former avoids the construction of a new
array and reference.
> Would this technique create a memory leak from the data
> referenced by $$AoA[0]?
No, Perl frees what's no longer being used.
- Eric
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