MATLAB Object-Oriented Programming

Using ExtendDouble

Create an instance of ExtendDouble and notice that the display is different from the

default:

ed = ExtendDouble(1:10,'One to ten')

ed =

One to ten

1 2 3 4 5 6 7 8 9 10

Inherited Methods

The ExtendDouble class inherits methods from the class double. To see a list of all

public methods defined by the double class, use the methods function:

methods(double.empty)

The sum function continues to operate on the superclass part of the object:

sum(ed)

ans =

55

The sort function works on the superclass part of the object:

sort(ed(10:-1:1))

ans =

1 2 3 4 5 6 7 8 9 10

Arithmetic operators work on the superclass part of the object:

ed.^2

ans =

1 4 9 16 25 36 49 64 81 100

Subscripted Indexing

Because the ExtendDouble class defines a property, the class must implement its own

subsref and subsasgn methods.

12 How to Build on Other Classes