mirror of
https://github.com/AquariaOSE/Aquaria.git
synced 2024-11-29 03:33:48 +00:00
13 lines
260 B
Lua
13 lines
260 B
Lua
|
-- 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'
|