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| author | Sebastian Schmelzer | 2010-10-25 16:53:54 +0200 |
|---|---|---|
| committer | Sebastian Schmelzer | 2010-10-25 16:53:54 +0200 |
| commit | 3050a9253437f4a4b5ad4bf3b3efdc3c660a5137 (patch) | |
| tree | 91ac22153e416aac7ca20916b314b5e2ffa871b1 /contrib/syslinux-4.02/com32/lua/test/readonly.lua | |
| download | preboot-3050a9253437f4a4b5ad4bf3b3efdc3c660a5137.tar.gz preboot-3050a9253437f4a4b5ad4bf3b3efdc3c660a5137.tar.xz preboot-3050a9253437f4a4b5ad4bf3b3efdc3c660a5137.zip | |
Diffstat (limited to 'contrib/syslinux-4.02/com32/lua/test/readonly.lua')
| -rw-r--r-- | contrib/syslinux-4.02/com32/lua/test/readonly.lua | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/com32/lua/test/readonly.lua b/contrib/syslinux-4.02/com32/lua/test/readonly.lua new file mode 100644 index 0000000..85c0b4e --- /dev/null +++ b/contrib/syslinux-4.02/com32/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' |