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| author | Peter Drahoš <drahosp@gmail.com> | 2014-02-19 12:36:10 +0100 |
|---|---|---|
| committer | Peter Drahoš <drahosp@gmail.com> | 2014-02-19 12:36:10 +0100 |
| commit | f8a616eedabd607c13b4b78427d184c600a32665 (patch) | |
| tree | 128ad33a2868e40ec984d6d098837d36edc9f3ac /share/lua/test/readonly.lua | |
| download | lua-Darwin-x86_64.tar.gz | |
[luadist-git] add lua-5.1.5-Darwin-x86_64 [ci skip]5.1.5-Darwin-x86_64Darwin-x86_64
Diffstat (limited to 'share/lua/test/readonly.lua')
| -rw-r--r-- | share/lua/test/readonly.lua | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/share/lua/test/readonly.lua b/share/lua/test/readonly.lua new file mode 100644 index 0000000..85c0b4e --- /dev/null +++ b/share/lua/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' |