Re: Metatables, C and Script...

[David Given <dg@...>]

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Fernando P. García wrote:
> Thank you, how can I "fix" that in pure lua?

Do this:

setmetatable(t, {__index=table})

...for each and every table that you want to act like this. You can't do
it globally.

However, this will cause you problems down the line, because:

(a) if you want to set a different metatable on one of your tables, that
table will suddenly start behaving differently;

(b) your table's contents will suddenly become pulluted with the
contents of the table utility library;

For example:

t:sort()
t["sart"] = 1
t["sert"] = 1
t["sirt"] = 1
t["sort"] = 1
t["surt"] = 1
t:sort() -- crash!

If you want to deal with object-oriented data structures in Lua, your
best bet is to build your own rather than trying to extend tables like
this --- less problematic. (This is one of the places where Lua's
non-object-oriented philosophy really shows through.)

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