LuaJIT是否支持表的__gc?

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问题描述

Lua 5.2(与5.1相反)为表支持__gc.

Lua 5.2 (in contrast to 5.1) supports __gc for tables.

LuaJIT借用了这个不错的功能吗?

Has LuaJIT borrowed this nice feature?

(我在Google上进行了搜索，并检查了LuaJIT的更改历史记录，但找不到答案. )

(I did a google search, and examined LuaJIT's Change History but couldn't figure out the answer.)

推荐答案

只需尝试一下:

-- test.lua
do
  local x = setmetatable({},{
    __gc = function() print("works") end
  })
end
collectgarbage("collect")
collectgarbage("collect")

$ lua51 -v
Lua 5.1.5  Copyright (C) 1994-2012 Lua.org, PUC-Rio
$ lua51 test.lua
$ lua52 -v
Lua 5.2.2  Copyright (C) 1994-2013 Lua.org, PUC-Rio
$ lua52 test.lua
works
$ luajit -v
LuaJIT 2.0.2 -- Copyright (C) 2005-2013 Mike Pall. http://luajit.org/
$ luajit test.lua
$

所以简短的答案是否".

So the short answer is no.

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