I just though I'd mention srfi-4 <http://api.call-cc.org/doc/srfi-4> as
well, which are much easier to interface with from C. If all your elements
are integers, for example, you might want to check out u32vector. Srfi-4
vectors use plain C float/int arrays and are possible as argument-types
from foreign-lambda and friends.
K.
On Wed, Jun 5, 2013 at 5:10 PM, pluijzer . <pluij...@gmail.com> wrote:
> Hello everybody,
>
> I was planning to use Chicken Scheme in a fashion more similar to Guile
> and Lua. i.e. passing Scheme Data Objects from Chicken to C and back using
> the C interface.
>
> I am a little confused though as how to have a C function return a Scheme
> List that is seen by the garbage collector.
>
> For example, is the code below correct, will the list be seen by the
> garbage collector? And if not, is there correct way to do this.
>
> #>
> C_word give_12()
> {
> C_word *mem = C_alloc(C_SIZEOF_LIST(2));
> C_word list = C_list(&mem, 2, C_fix(1), C_fix(2));
> return list;
> }
> <#
> (print ((foreign-lambda scheme-object "give_12")))
>
> Also there doesn't seem to be a C_listp predicate. Is this a concious
> omission?
>
> thank you in advance,
> Richard
>
> _______________________________________________
> Chicken-users mailing list
> Chicken-users@nongnu.org
> https://lists.nongnu.org/mailman/listinfo/chicken-users
>
>
_______________________________________________
Chicken-users mailing list
Chicken-users@nongnu.org
https://lists.nongnu.org/mailman/listinfo/chicken-users
