Now, to track both insertions and overwriting of existing entries in the
table, you have to use a proxy table (or something like it). Example:
tbl = {}
tbl.__proxy = {}
mt = {__index = function(t,k) return t.__proxy[k]; end,
__newindex = function(t,k,v) print('tracked', k, v); t.__proxy[k]
= v; end}
setmetatable(tbl, mt)
This also breaks iteration of the table. So these tables would
need to be special cases, not good. Ugh, I think I'll just add a
__setindex metamethod so everything can work like normal.
--
// Chris
