Re: Predicate ordering when using current_predicate/1

[Daniel Diaz]

Hi Sean

Well done ! However, I don’t understand why you added the call to keysort/2 since setof/3 already sorts the list (this is the only difference between setof/ and bagof/3). You can remove it.

Daniel

PS: about sockets: I have put a version in the git which adds the SO_REUSEADDR option at socket creation. To get it:

git clone git://git.code.sf.net/p/gprolog/code gprolog-code

BTW: if you write on the socket, you may to call flush_output(SO) to be sure the data is sent (and thus accessible on the other side).

Le 22 nov. 2013 à 23:43, Sean Charles <address@hidden> a écrit :

Danieal,

Mission accomplished!

I ran with what you gave me and I now have a process that executes tests in the same order as they are declared in the source text. I had to learn (very quickly) about the A-B pair notation, something I had not seen before but as with the predicate indicator thing, once you know how it works the rest is easy…easier.

Here’s what I ended up with:

run_tests :-

        get_all_tests(AllTests),

        keysort(AllTests, SortedTests),

        maplist(exec_test, SortedTests),

The get_all_tests/1 predicate and the supporting acts look like this:

get_all_tests(Tests) :-

setof(Line-Name, get_one_test(Name, Line), Tests).

get_one_test(Name, Line) :-

current_predicate(Name/0),

atom_concat('test_', _, Name),

predicate_property(Name, prolog_line(Line)).

exec_test(_-TestFunction) :- /* omitted for brevity! */

Essentially I get all the test_ predicates then keysort/2 them into line number order and then maplist/2 over the exec_test/1 function which is now modified to accept a pair. Damn that’s useful to know!

So, once again, thank you very mud for your support in helping me out.

I am going to try to finish my Redis tests over the weekend and then I am going to update my “main” project with this improved code. in fact, I might even create a little github project and then include it as a dependency or something like that later on.

Have a great weekend!

:)

Sean.

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