Re: ipairs in Lua 5.3.0-alpha

[Dirk Laurie <dirk.laurie@...>]

2014-08-16 16:42 GMT+02:00 Andrew Starks <andrew.starks@trms.com>:
>
>
> On Saturday, August 16, 2014, Dirk Laurie <dirk.laurie@gmail.com> wrote:
>>
>> 2014-08-16 16:23 GMT+02:00 Andrew Starks <andrew.starks@trms.com>:
>>
>> > What would be most useful to me, would be if ipairs returned all numeric
>> > key
>> > / value pairs, in order, regardless of holes.
>>
>> I can't see how implementing that in C would be possible in
>> a cleverer way than iterating over pairs and keeping what you
>> need. But the Lua extension I thought was off-topic would
>> do this for you:
>>
>>    for k,v in pairs(tbl) if type(k)=='number' do
>>       ...
>>    end
>>
>
> Not in order.

Didn't see that. Then you will have to cache everything in a list
and sort it, since there is no way you can make a table like
{[130]='a',[292]='b'} etc retrieve the keys in order, even in C.