[Scilab-Dev] Scilab 6.0 // Implementation of user-defined types

[Samuel Gougeon]

Hello Dirk,

Your question is funny, because it could be somewhat about the 
typename() function, that has been simplified in Scilab 6:
The syntax*typename**(**name**, **type**)* has been removed:
5.5.2: https://help.scilab.org/docs/5.5.2/en_US/typename.html
6.0.0: https://help.scilab.org/docs/6.0.0/en_US/typename.html

IMO, it was in the top 5 most obscure feature of Scilab <6 :)
I never saw any clear explanation nor example of usage about it for 20 
years.
Maybe it was only silently failing:
In Scilab 5:
-->t = tlist(["test" "r"],%pi);
-->t.r
  ans  =
     3.1415927
-->typename("test", 140)
-->type(t)
  ans  =
     16.

Maybe the only really related (and not concluding) entry in the whole 
Scilab knowledges database is:
http://bugzilla.scilab.org/5621

But your question could also be about custom "typeof". Then, the best 
entries are likely
https://help.scilab.org/docs/6.0.0/en_US/tlist.html
and
https://help.scilab.org/docs/6.0.0/en_US/mlist.html

Coming back to the example here-above:
--> // Creating a new typeof object named "mytype"
--> // with fields "num", "bool", "poly", "txt"
--> t = tlist(["mytype" "num" "bool" "poly" "txt"]);
--> // Assigning initial values to fields
--> t.num = %pi;
--> t.bool = %f;
--> t.poly = (1-%z)^3;
--> t.txt = ["Hello" "Allo" "Hallo"]
  t  =
        t(1)

!mytype  num  bool  poly  txt  !

        t(2)
    3.1415927

        t(3)
   F

        t(4)
             2   3
    1 -3z +3z  -z

        t(5)
!Hello  Allo  Hallo  !

--> typeof(t)
  ans  =
  mytype

Nothing has changed between Scilab 5 and Scilab 6 about that.

HTH
Samuel


Le 18/02/2017 à 14:02, Dirk Reusch a écrit :
> Hello,
>
> is there (apart from source code of Scilab itself) any
> documentation/tutorial/example available, which provides
> a good starting point on how to implement user-defined types
> in the new Scilab 6.0?
>
> Thanks,
>
> Dirk
> _______________________________________________
> dev mailing list
> dev at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/dev
>

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