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Postings from July 2001
On Thu, Jul 19, 2001 at 11:43:02AM -0700, Jeffrey Friedl wrote:
>
> Graham Barr <gbarr@pobox.com> wrote:
> |> I too have often wanted something like this. Currently I do it by a tied
> |> hash, but due to performance only do so when I run my script in a debug
> |> mode.
>
> I've done this type of thing as well, but it seems that with complex
> systems working on complex data, the debugging doesn't always uncover
> everything.
>
> |> However I would disagree that reading a non-existant entry should croak.
>
> My thinking here is that when you create the hash (and I'm mostly thinking
> in a using-a-hash-as-an-object mode), you would pre-create all fields
> you'll ever need:
Thats certainly one way to do it. I am just saying that is not the ONLY way
to do it. And I dont see why Perl should force things.
> If you really want to add another on the fly, you can easily do it with
> my $prev = clamp %$ref, 0;
> $ref->{NewKey} = 1;
> clamp %$ref, $prev;
>
> (it's just flipping a bit, so is very low impact).
I am OK with adding, thats not my issue. My issue is with reading the hash.
ie
$var = $hash{element};
should just continue to return undef, not croak. IMO
Graham.
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