[tpm] Schrodinger's hash ?

[Shlomi Fish]

Hi Indy,

On Fri, 22 Jun 2012 14:30:43 -0400
"Indy Singh" <indy at indigostar.com> wrote:

> I would just change the while loop to:
> foreach (keys %hash) {
>     $index = $_;
>    $object = $hash{$index}
> }

This code is non-idiomatic. I would write it as:

foreach my $key (keys %hash)
{
	my $object = $hash{$key};
	# Do something with $key and $object
}

See:

http://perl-begin.org/tutorials/bad-elements/#assigning-from-dollar-underscore


> 
> It doesn’t explain why your hash appears empty, but if the print work, then this code should work just as well.
> 
> A while on an array or hash is odd coding, unless you intend to change the array inside the loop – but that is an odd thing to do too.

Actually while (my ($k, $v) = each %hash) is idiomatic - just somewhat flaky.

Regards,

	Shlomi Fish

> Indy Singh
> IndigoSTAR Software -- www.indigostar.com


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