Re: Sparse numeric arrays in lua 5

["Milano Carvalho" <milanogc@...>]

Hi,

I don't know why the table constructor, in Lua 5, doesn't set the total 
number of elements when there is a nil value among them.

I think you will need set the number of elements by hand:

f = {1, nil, 10}
table.setn(f, 3)
table.foreachi(f, print)

Or you will need use pairs instead:

f = {1, nil, 10}
for k, v in pairs(f) do print(v) end

Milano


> From: Daniel Silverstone <dsilvers@digital-scurf.org>
> Reply-To: lua-l@tecgraf.puc-rio.br
> To: Multiple recipients of list <lua-l@tecgraf.puc-rio.br>
> Subject: Sparse numeric arrays in lua 5
> Date: Sat, 29 Mar 2003 22:20:13 +0000
>
> Hi,
>
> I'm trying to implement a sparse numeric array in lua 5.
>
> however given:
>
> f = { 1, nil, 10 }
>
> in lua 4, foreachi(f,print) will give:
> 1	1
> 2	nil
> 3	10
>
> in lua 5, table.foreachi(f,print) gives:
> 1	1
>
> (I.E. it stops at the nil)
>
> Is there a known way to get around this?
>
> D.
>
> --
> Daniel Silverstone                               
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> Hostmaster, Webmaster, and Chief Code Wibbler          Digital-Scurf 
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