Re: exists $foo[7] and delete $foo[7]

["Mark Mielke" <markm@nortelnetworks.com>]

On Fri, Jan 14, 2000 at 07:30:59AM +0200, "Jarkko Hietaniemi" wrote:
> Mark Mielke writes:
>  > But wait... you can ALREADY do things with sparse arrays...
>  >     $a[500] = 1;
>  > Does NOT allocate 501 SV's. It allocates exactly one. The internal array
>  > underneath may actually be "501 * sizeof(void *)" bytes big... but who
>  > cares? Did the user worry about it before?
> Try
> 	$a[500_000_000] = 1;
> and then talk again about Perl already having sparse arrays and
> the internal array underneath not being important.

    1) 500_000_001 SV's are NOT allocated.
    2) This is an implementation detail that can be dealt with in the
       future, and can therefore be currently considered a bug.

mark

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References to:

Tom Christiansen <tchrist@chthon.perl.com>
Bart Schuller <schuller@lunatech.com>
Ted Ashton <ashted@southern.edu>
"Mark Mielke" <markm@nortelnetworks.com>
Jarkko Hietaniemi <jhi@iki.fi>

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