MATLAB Object-Oriented Programming

if nargin == 0

data = 1;

else

mustBePositive(data)

end

obj = obj@double(data);

end

end

end

Create an object of the PositiveDouble class using a 1-by-5 array of numbers:

a = PositiveDouble(1:5);

You can perform operations on objects of this class like any double.

sum(a)

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)

See Also

Related Examples

• “Design Subclass Constructors” on page 12-9


• “Subclasses of MATLAB Built-In Types” on page 12-50

12 How to Build on Other Classes