Re: table.clear

[Ulrich Schmidt <u.sch.zw@...>]

You are right. May be i am to much lua beginner to see the benefit of 
your approach compared to

tablevar = setmetatable({}, getmetatable(tablevar))

The only difference i can see is, that table.clear() would do (parts of)
the _gc job sooner.

Ulrich

Am 14.12.2013 08:27, schrieb Coda Highland:
> On Fri, Dec 13, 2013 at 11:19 PM, Ulrich Schmidt <u.sch.zw@gmx.de> wrote:
> > This shows me both tables t1/t2 points to the same table tx. let's think
> > about what happens if i would do a T2:clear():
> > In case the clear clear function wants to free all t2 entries immediately,
> > the clear function needs to check double references for each table item of
> > type table/function.
>
> Why would it FREE all T2 entries immediately? It can just orphan them,
> and then they'll get collected next sweep, and when that happens, __gc
> will run.
>
> /s/ Adam