What are the limitation on arrays of objects with MATLAB coder?

I read on the support page https://www.mathworks.com/help/simulink/ug/how-working-with-matlab-classes-is-different-for-code-generation.html that Arrays of Objects are not supported. Do this mean that I can't have a class with a property that is an array of objects (of another class)? Or does is mean that I can't have arrays of objects at all (not even in my main function)? I am thinking there must be some limited arrays of objects support, otherwise code generation from OO code would be pretty useless.

How does this limitation work with the Java coder?

Answer 1

[Denis Gurchenkov]

The later is correct. As of R2017b, MATLAB Coder does not support arrays of objects, so if your MATLAB code creates an array of objects, such as

x = [MyClass(1), MyClass(2)];

or

x = repmat(MyClass(1), [3 4]);

then code generation will fail with an error message (presuming that there is a class MyClass in your code).

The only workaround as of now is to use cell arrays of objects, that is,

x = {MyClass(1), MyClass(2)};

should compile fine.

[Tom Shlomo]

Has something changed in recent releases?