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- Subject: Re: metatables for strings?
- From: Rena <hyperhacker@...>
- Date: Sun, 3 May 2015 12:42:27 -0400
On Sun, May 3, 2015 at 12:39 PM, Dirk Laurie <email@example.com> wrote:
> 2015-05-03 18:33 GMT+02:00 Nagaev Boris <firstname.lastname@example.org>:
>> PS. I still like syntax "hello":sub(1, 4)
> Didn't somebody make a patch to allow that?
>> PS 2. Why no individual metatables for light userdata?
> They would no longer be light. A light userdata is like a number:
> it's just a pointer.
You can "fake" individual metatables for light userdata, by keeping a
reference to each userdata in a weak table, and looking up their
individual methods in that table. Only trouble is it requires all code
using light userdata in your application to cooperate.
Sent from my Game Boy.