MATLAB Object-Oriented Programming

Behavior of Inherited Built-In Methods

In this section...

“Subclass double” on page 12-54

“Built-In Data Value Methods” on page 12-55

“Built-In Data Organization Methods” on page 12-56

“Built-In Indexing Methods” on page 12-57

“Built-In Concatenation Methods” on page 12-57

Subclass double

Most built-in functions used with built-in classes are actually methods of the built-in class.

For example, the double and single classes define several methods to perform

arithmetic operations, indexing, matrix operation, and so on. All these built-in class

methods work with subclasses of the built-in class.

Subclassing double enables your class to use features without implementing the

methods that a MATLAB built-in class defines.

The DocSimpleDouble class subclasses the built-in double class.

classdef DocSimpleDouble < double

methods

function obj = DocSimpleDouble(data)

if nargin == 0

data = 0;

end

obj = obj@double(data);

end

end

end

Create an instance of the class DocSimpleDouble.

sc = DocSimpleDouble(1:10)

sc =

1x10 DocSimpleDouble:

double data:

1 2 3 4 5 6 7 8 9 10

12 How to Build on Other Classes