LuaJIT是否支持表__gc？

Question

Lua 5.2(与5.1相反)支持表的__gc.

LuaJIT借用了这个不错的功能吗？

(我做了谷歌搜索,并检查了LuaJIT的变更历史,但无法找到答案.)

Answer 1

就试一试吧:

-- 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
$

所以简短的回答是否定的.