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| Direktori : /proc/2/cwd/usr/src/redis-stable/deps/lua/test/ |
| Current File : //proc/2/cwd/usr/src/redis-stable/deps/lua/test/readonly.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'