Re: Syntax and redundancy

[Adrian Perez <moebius.lists@...>]

El 30/08/2005, a las 18:22, Chris Marrin escribió:

> I hate weighing in on things like this, but there are many more  
> cases where Lua not only requires more keystroked, but is more  
> arcane as well.
>
> At risk of being beaten up endlessly, how is this done in Lua?
>
>     struct list { struct list* next } list;
>     list* l;
>     ... fill the list ...
>     for (list* p = l; p != 0; p = p->next) { ... }
>
> How is that done in Lua? This is both trying to illustrate that C's  
> for loop has nice flexibility, and trying to understand how you  
> would do something like this in Lua! I would do it like this:
>
>     local l = { }
>     ... fill the list
>     local p = l
>     while p ~= nil do
>         ...
>         p = p.next
>     end
>
> Any nicer ways?

I propose the following:

local l = { }
... fill the list
for _,value in l do
   ...
end

Of course, you may also write:

local l = { }
... fill the list
table.foreachi(l, function(_,value) ... end)


=)

--
Adrian Perez
GPUL/CLUG member » http://gpul.org
Por los puntos #20 y #54.

Attachment: PGP.sig
Description: Mensaje firmado digitalmente