[Gambas-user] Sort an array of Objects[] of different Class

[martin p cristia]

I doing some GambasCAD program, soon to be in the Farm. The compare 
method is at the herited class:

' Gambas class file

Inherits ClsElementoBase                                 ' handles  
Clicks and common entity vars

Public Const Genero As String = "Tabique"      ' who am I

Public Const DrawingOrder As Integer = 20     ' <-------I SORT THIS :  1 
is drawn first


Public Sub _new(x1 As Float, z1 As Float, x2 As Float, z2 As Float, 
nivel As Float)


     Me.P.Add(puntos.Add(X1, Z1, nivel))


End

Public Function _compare(entities As Object) As Integer

     ' all entities must have a var called DrawingOrder!

     Return Sgn(Me.DrawingOrder - entities.DrawingOrder)


End

What you've suggested works perfectly.


> I don't know what you are going to do with the code, but keep in mind that
> if the object array will get objects, which does not inherit the compare
> method, then you will get silent sorting errors.
> So, either keep the variable used in the comparison in the base class or
> build guard for the object array. Otherwise you will end up with troubles.
>
> Jussi
>
>
-- 
Saludos

Ing. Martin P Cristia