1
0
Fork 0
mirror of https://github.com/AquariaOSE/Aquaria.git synced 2024-11-29 03:33:48 +00:00
Aquaria/ExternalLibs/lua-5.1.4/test/readonly.lua

13 lines
260 B
Lua
Raw Normal View History

-- make global variables readonly
local f=function (t,i) error("cannot redefine global variable `"..i.."'",2) end
local g={}
local G=getfenv()
setmetatable(g,{__index=G,__newindex=f})
setfenv(1,g)
-- an example
rawset(g,"x",3)
x=2
y=1 -- cannot redefine `y'