On Mon, Oct 21, 2019 at 06:16:41AM -0700, C K Kashyap wrote:
> Thank you Alex,
> I get the following when I run the (?) - for which I defined a function XX.
Good.
> I do see that I get back 1 record when *CuSuNm is "Oaks" and 3 records when
> *CuSuNm is "". However, I don't see the actual values - except for @Nm.
> @Nr=NIL @Nm="Oaks" @Tel=NIL @Plz=NIL @Ort=NIL @Mob=NIL @@={C2}
Yes. '?' shows all unified Pilog variables. As the object is bound to '@@', we
see '{C2}' but that's not so very helpful.
You can use the 'show' predicate to view them:
: (? ... (select (@@) ...) (show @@))
or pick individual properties
: (? ... (select (@@) ...) (val @Nm @@ nm) (val @Tel @@ tel))
then '@Nm' and '@Tel' will be unified to the proper values and shown in the
results.
> While at it, could you also explain the @/@@ convention? Is there a doc I
> could read for this?
'@@' is just the implicit variable used in the GUI. Outside of GUI usage you can
use any name, e.g.
: (? ... (select (@CuSu) ...
☺/ A!ex
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