Making Handle a Superclass

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Benjamin
Benjamin 2013-12-20
评论： Benjamin 2013-12-20
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 个评论
Jacob Halbrooks
Jacob Halbrooks 2013-12-20
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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采纳的回答

Sean de Wolski
Sean de Wolski 2013-12-20
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 个评论
Sean de Wolski
Sean de Wolski 2013-12-20
编辑：Sean de Wolski 2013-12-20
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 2013-12-20
Running "clear classes" was what worked. Thanks.
Yes, by brother challenged me to code a Go board over my break.

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