To define a class that is a subclass of another class, add the
superclass to the
classdef line after a
classdef ClassName < SuperClass
When inheriting from multiple classes, use the
to indicate the combination of the superclasses:
classdef ClassName < SuperClass1 & SuperClass2
See Class Member Compatibility for more information on deriving from multiple superclasses.
Subclasses do not inherit superclass attributes.
Suppose you want to define a class that derived from
double and restricts values to be positive
classdef PositiveDouble < double methods function obj = PositiveDouble(data) if nargin == 0 data = 1; else mustBePositive(data) end obj = obj@double(data); end end end
Create an object of the
using a 1-by-5 array of numbers:
a = PositiveDouble(1:5);
You can perform operations on objects of this class like any double.
ans = 15
Objects of the
PositiveDouble class must
be positive values.
a = PositiveDouble(0:5);
Error using mustBePositive (line 19) Value must be positive. Error in PositiveDouble (line 7) mustBePositive(data)