Because this way you can reference data points with sc_vec+n as opposed to dealing with single or double linked lists (since sc_vec can be an array).

On Feb 21, 2014 7:26 AM, "Charles Goyard" <cg@fsck.fr> wrote:
Hi,

Sorry for this question, but why isn't sc_vec a good old pointer ?

>     t_gobj sc_gobj;         /* header for graphical object */
>     t_symbol *sc_template;  /* template name (LATER replace with pointer) */
>     t_word sc_vec[1];       /* indeterminate-length array of words */
> } t_scalar;
>
> How is a static t_word array of size 1 an indeterminate-length array?  Is its placement as the last member of the struct required?

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