On 03/08/2020 15.43, Ranier Vilela wrote:
> Em seg., 3 de ago. de 2020 às 04:02, Sjoerd Mullender
> <sjoerd@monetdb.org <mailto:sjoerd@monetdb.org>> escreveu:
>
>     Either way is correct.
>
> Are we missing something?
>
>     The first form evaluates both (b->ttype != TYPE_void) and b->tkey, both
>     of which result in either 0 or 1.  The single & does a bit-wise AND on
>     those two values and results in 1 if both sides evaluated to 1.
>
>     In the second form, if first part evaluates to 0, b->tkey is not
>     evaluated,

and if the first part evaluates to 1, the second part is also
>     evaluated.  The restult, again, is only 1 if both sides evaluate to 1.
>
> Wait, bitwse AND (&) is not shortcut, If first part evaluates to 0
> *b->key is stiil evaluated.*

That's correct.  I think I mentioned that.