Re: hpairs?
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- Subject: Re: hpairs?
- From: Emmanuel Oga <emmanueloga@...>
- Date: Sun, 2 Jan 2011 20:00:05 -0300
I came up with this experiment involving __index and __newindex to
segregate a table in its array part and non-array part:
https://gist.github.com/762890
Caveats:
It requires an special constructor to create the table:
t = arrayTable{1, 2, a = 1}
t[1.5]=1.5
It requires special iterators replacing both ipairs and pairs:
for k,v in at_ipairs(t) do print(k, v) end
for k,v in at_pairs(t) do print(k, v) end
Alternatively you can use the indexes to the real table/array provided
in the table
for k,v in ipairs(t.___array) do print(k, v) end
for k,v in pairs(t.___table) do print(k, v) end
Which I believe is even more ugly than using the iterators above.
I tried to override __len on the metatable but apparently that does
not work in lua 5.1 (I read somewhere __len will be overridable for
tables/strings in 5.2?)
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