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| author | Kartik K. Agaram <vc@akkartik.com> | 2021-10-19 21:38:48 -0700 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2021-10-22 19:24:44 -0700 |
| commit | 74f8cd15bb43110973deffdeb9dd229797e5b328 (patch) | |
| tree | 12d6b5475a786eacf7a5a79b03b2b85621578ec6 /test/readonly.lua | |
| download | teliva-74f8cd15bb43110973deffdeb9dd229797e5b328.tar.gz | |
new fork of Lua 5.1
https://www.lua.org
Diffstat (limited to 'test/readonly.lua')
| -rw-r--r-- | test/readonly.lua | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/test/readonly.lua b/test/readonly.lua new file mode 100644 index 0000000..85c0b4e --- /dev/null +++ b/test/readonly.lua @@ -0,0 +1,12 @@ +-- 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' |