lua-users home
lua-l archive

[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index] [Thread Index]

On Feb 07, 2005, at 11:44, Steve Donovan wrote: 02/07/05 12:32PM >>>

Why so complicated?
   pairs = function( t )
        local mt = getmetatable( t )
        return ( ( mt and mt.__pairs ) or raw_pairs )( t )

It would be very cool if 'for i,v in t do...'
would use the global pairs() function;  that would
(a) make quite explicit what the for-loop means
if t isn't an iterator function and (b) make interesting
overloading possible, such as above.

Well, it uses the global next() function, isn't that kind of good enough? Try [[next = nil for i,v in t do ... ]]. It's also deprecated.

I asked for these two facts to be documented ages ago (close to when 5.0 came out?).

David Jones