Re: metacall being abolished.

Yes, that's it.  In fact I changed ignore to "log an error message but ignore the failures", but yes.
 

Alan Baljeu


----- Original Message -----
From: Jan Wielemaker <[email protected]>
To: Alan Baljeu <[email protected]>
Cc: Prolog <[email protected]>
Sent: Thursday, July 18, 2013 10:43:46 AM
Subject: Re: [SWIPL] metacall being abolished.

On 07/18/2013 04:05 PM, Alan Baljeu wrote:
> In one file I have this:
> model_post(Spec) :-
> model:maplist(ignore, Spec).

I guess this is not handled correctly. Not immediately sure how to fix
this either. I'm mostly wondering what you are trying to do. I much more
intuitive way would be to write

model_post(Spec) :-
    maplist(model:ignore, Spec).

which will work correctly. Its not very clear to me what you are trying
to achieve. Call ignore(model:Item) for each element in Spec? Anyway,
this works fine:

==
:- use_module(library(apply_macros)).

model:test :-
    writeln(hello).

test :-
    model_post([test]).

model_post(Spec) :-
    maplist(model:ignore, Spec).
==

    Cheers --- Jan


>
> Subsequently when I recompile model.pl, I get this error:
> � � � � Loading module model abolished: [model:__aux_maplist/2_ignore+0/1]
>
> and
> Warning: The predicates below are not defined. If these are defined
>
> Warning: at runtime using assert/1, use :- dynamic Name/Arity.
> Warning:�
> Warning: model:'__aux_maplist/2_ignore+0'/1, which is referenced by...
>
>
> The aux predicate should have been created in the�
> other module. �The only remedy I can think of is to manually force the original�
> file to recompile every time. �This is a major nuissance. �
>
> Alan Baljeu�
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