__index function in a metatable shared by several tables
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- Subject: __index function in a metatable shared by several tables
- From: Tim Hunter <TimHunter@...>
- Date: 2007年10月06日 15:54:25 -0400
Sorry for the vague subject. I don't know better words to summarize my
question.
The following code prints
1
You called foo
Is there any way for the function f to modify o.test? In my code there
could be multiple o tables, all sharing the t metatable. I would like
function f to store state information in each individual o table.
t = {}
setmetatable(t, {__index =
function(_, k)
local function f()
print("You called " .. k)
end
return f
end
})
o = setmetatable({ test=1 }, t)
t.__index = t
print(o.test)
o.foo()