Re: [5.4] Shrinking of tables
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- Subject: Re: [5.4] Shrinking of tables
- From: Dirk Laurie <dirk.laurie@...>
- Date: Fri, 6 Jul 2018 16:31:20 +0200
2018年07月06日 14:58 GMT+02:00 Roberto Ierusalimschy <roberto@inf.puc-rio.br>:
>> Is it still the case in Lua 5.4 that the array part of a table is
>> never shrunk except possibly when you assign a value to a positive
>> integer index outside it?
>
> That was not the case in previous versions and it is not the case in 5.4.
>
> t = {nil, nil, nil, nil}
> -- array part has size 4, hash part has size 0
> t.a = true -- force a rehash
> -- now, array part has size 0, hash part has size 1
OK, is a rehash still only triggered by an assignment to a new key or
will collectgarbage()
or even something else also do it now?