RE: keying by function and index
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- Subject: RE: keying by function and index
- From: "Nick Trout" <nick@...>
- Date: 2003年5月16日 16:39:33 -0700
> Hi, I need to be able to use functions as keys in a table but
> also need
> to associate different indexed values for each function. I could go
> with keying first by function then via the index in
> sub-tables, but for
> my particular use it would be better to have all of the
> references in a
> single table. Would it be good then to key by a string with
> the index
> appended? Something analagous to this:
>
> local function f() end
> local index = 3
> local value = "foo"
> local t = {}
> t[tostring(f) .. "_" .. index] = value
Untested:
T = {}
function setvalue(fn, index, value)
if not T[fn] then T[fn] = {} end
T[fn][index] = value
end
function getvalue(fn, index)
return T[fn][index]
end