OT: Perl syntax Question

[Devin Whalen]

On Mon, 2005-10-24 at 10:52 -0400, Joseph Kubik wrote:
> What does the following mean?
> ($#{$reg->{'sale'}{'items'}} == -1)
> 
> As, in, What does $#{} really do?
> 
> Thanks,
> -Joseph-

Hey,

I think $reg->{'sale'}{'items'} returns an array reference.  You then
dereference the array with this:
{$reg->{'sale'}{'items'}} then the $# added to it causes the array to
return the highest index.  So if it returns -1 then the array is empty.
However, I think that this is deprecated so it would be better to use
scalar(@{$reg->{'sale'}{'items'}}) and test for 0.

Later


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