Re: question on ipairs

[Andrew Gierth <andrew@...>]

>>>>> "Coda" == Coda Highland <chighland@gmail.com> writes:

 >> why the _ipairs metamethod was deprecated?

 Coda> Because there's no need for a metamethod for something as simple
 Coda> as ipairs()

Some of us greatly disagree with this position - in particular, it
seriously impacts what you can do with userdatas.

For example, if embedding into an environment (e.g. a database) which
has a native array type (such as SQL arrays) which can be iterated
sequentially more efficiently than they can be indexed into (because
they have variable-length elements), it means that you can't just
provide an __ipairs and have everything just work in the obvious way;
instead, ipairs() will work inefficiently and you have to provide a new
but functionally identical method.

-- 
Andrew.