Re: make an element last element of a list

[rm]

On Tue, Oct 21, 2003 at 05:08:42PM +0200, Laurent Marzullo wrote:
> Hello all,
> 
> I've got a scheme list 
> 
> SCM   scm_game_list;
> 
> and I want to add, with C API, an elements at the end of
> the list.

If you want to destrutively modify your list you can do the
following:
 
 (define my-lst (list 1 2 3 4))
 (define new-last (list 5))
 (set-cdr! (last my-lst) new-last)

using the c functions 
 

 SCM new_last =  scm_cons( new_elem , SCM_EOL );

 scm_set_cdr_x ( scm_last_pair (my_lst),  new_last );

HTH Ralf Mattes


> Is there any function to do this or must I go throw the entire
> list and adding a new scm_cons( new_elem , SCM_EOL ) at the end ?
> 
> Thanks
> -- 
> Laurent Marzullo <address@hidden>
> 
> 
> 
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