Re: Lua 5.3 Suggestion: extend lua_(get|set)uservalue() toassociate userdata-to-userdata

Subject: Re: Lua 5.3 Suggestion: extend lua_(get|set)uservalue() toassociate userdata-to-userdata
From: Sir Pogsalot &lt;sir.pogsalot@ ... &gt;
Date: Tue, 3 Dec 2013 21:08:16 +0000

On Tue, Dec 3, 2013 at 9:07 PM, Sir Pogsalot <sir.pogsalot@gmail.com> wrote:

I wish I understood more of where the `env' member is used on userdata:

http://www.lua.org/source/5.2/lobject.h.html#env

I was looking into see how easy of a change it would be to allow setting another userdata as the env to a userdata. I had previously thought it was something pretty low-level, only known to the GC, but now that I look at it I think I will have to concede that my idea is inappropriate. :\ Just very serious where a userdata's env member takes affect. I like Roberto's idea to associate a table containing all the pair userdatas with the linked userdata as the key and ~weakly-pair~ it. That's definitely a solution I like, but I'm hoping someone with more core experience can fill me in on what a userdata's env might do apart from be set and accessible with get/setuservalue()

:-)

On Tue, Dec 3, 2013 at 6:31 AM, Sean Conner <sean@conman.org> wrote:

It was thus said that the Great William Ahern once stated:

> Hosting repositories will be dead simple because it simply involves hosting
> a single JSON-formatted manifest file plus the modules, all stored in a
> single static directory.

Why JSON and not Lua? Rockspecs are Lua and seeing how this is for Lua
...

-spc (Just curious ... )