Re: [ANN] Lua 5.4.0 (alpha-rc1) now available

[Rodrigo Azevedo <rodrigoams@...>]

The performance (GC) is excellent again, thank you very much!

Just one question about a local <toclose>

I) it is a <const> : cannot be changed;
II) it is predictable: if out of scope;
III) it is ordered: it is closed in the reversed order of declaration;

Is <toclose> essentially an hypothetical '<gc>' with those three main
characteristics above?

If true, then why not consider to default (mark) *all* 'local' to be
collected as soon as possible (when out of scope), at the given
reversed order, by the garbage collector (call __gc)? It is II) and
III) above compatible, and can be explicit '<const> '-ed with the only
difference (I think) being the wait of start a garbage collector
cycle, which can be easily triggered by 'collectgarbage'.

Thanks!


Em qua, 29 de mai de 2019 às 21:38, Luiz Henrique de Figueiredo
<lhf@tecgraf.puc-rio.br> escreveu:
>
> Lua 5.4.0 (alpha-rc1) is now available for testing at
>         http://www.lua.org/work/lua-5.4.0-alpha-rc1.tar.gz
>
> The checksums are
>         MD5     56f18a477f5a962eeca4d5bb0ccad34b  -
>         SHA1    def2b1be4c0a4eaab8afd25c8ba87f6a42074f3b  -
>
> This is an alpha version. Some details may change in the final version.
>
> The main changes in Lua 5.4.0 are listed at
>         http://www.lua.org/work/doc/#changes
>
> An updated reference manual is included and also available at
>         http://www.lua.org/work/doc
>
> The complete diffs from work2 to alpha are available at
>         http://www.lua.org/work/diffs-lua-5.4.0-work2-alpha.html
>         http://www.lua.org/work/diffu-lua-5.4.0-work2-alpha.html
>
> If your platform is a common Unix-like platform, just do
>         make guess
> The Makefile will guess your platform using uname and build Lua for it.
>
> All feedback welcome. Thanks.
> --lhf
>


-- 
Rodrigo Azevedo Moreira da Silva