How do I cast a superclass object into a subclass object in MATLAB 7.7 (R2008b)?

14 views (last 30 days)
If I have a superclass object, and I would like to cast it into a subclass object. In the pre-R2008b class system I could do this:
obj_sub = class(struct(obj_super),'mySubClass');
In Java, I can do this as:
(mySubClass) obj_super
I do not see any straighforward way to do this in the current MATLAB class system.

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 12 Aug 2020
Edited: MathWorks Support Team on 10 Jul 2020
MATLAB 7.7 (R2008b) does not have any functionality for directly casting a superclass object to a subclass object.
As a workaround (in any version of MATLAB), create and use a method which automatically copies over non-dependent property values:
function output = copyObject(input, output)
C = metaclass(input);
P = C.Properties;
for k = 1:length(P)
if ~P{k}.Dependent
output.(P{k}.Name) = input.(P{k}.Name);
end
end
end
For more information about converting objects of one class to another and some examples, please refer to the following documentation page:

More Answers (0)

Categories

Find more on Class Introspection and Metadata in Help Center and File Exchange

Products


Release

R2008b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!