Making Handle a Superclass

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Benjamin
Benjamin on 20 Dec 2013
Commented: Benjamin on 20 Dec 2013
I am trying to make a handle class, but I keep getting an error which says "The class 'handle' is not a superclass of class 'Go_board', as required to invoke a superclass constructor or method."
Here is the code I am trying for my class:
classdef Go_board < handle
properties
Board
end
methods
function obj=Go_board(size)
A = Go_cell();
obj.Board = repmat(A, size);
end
end
end
Also, here is the code for by Go_cell class:
classdef Go_cell
properties
state = char('e');
checked = logical(0);
end
end
I don't understand what is wrong because I thought "< handle" made handle a superclass of Go_board. I appreciate any help.
  1 Comment
Jacob Halbrooks
Jacob Halbrooks on 20 Dec 2013
It looks like you've subclassed from handle correctly. What code do you execute that results in an error?
Also, you might consider using false instead of logical(0), and just 'e' instead of char('e').

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Accepted Answer

Sean de Wolski
Sean de Wolski on 20 Dec 2013
Run:
clear;
clear classes;
To make sure that any old instances of your class are gone.
If the error still appears, then make sure you're using the latest version of the class:
which -all Go_board
Writing a game while on vacation? :)
  2 Comments
Sean de Wolski
Sean de Wolski on 20 Dec 2013
Edited: Sean de Wolski on 20 Dec 2013
My guess is it's the second one, i.e. you have two versions of the class. Your class doesn't appear to call the superclass constructor.
Benjamin
Benjamin on 20 Dec 2013
Running "clear classes" was what worked. Thanks.
Yes, by brother challenged me to code a Go board over my break.

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