require subclasses to support the same number of input and output arguments as the abstract method of their super class
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- Concrete subclasses are not required to support the same number of input and output arguments and do not need to use the same argument names. However, subclasses generally use the same signature when implementing their version of the method.
what I want is exactly the opposite, i.e. I want Concrete subclasses are required to support the same number of input and output arguments and otherwise I get an error. How is it possible?
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Matt J
il 13 Feb 2022
Modificato: Matt J
il 13 Feb 2022
In the base class constructor, you can check the function signature, like in this example:
classdef myclass
methods
function obj=myclass()
ml=getfield(metaclass(obj),'MethodList');
meth=ml({ml.Name}=="myMethod");
assert(isequal(numel(meth.InputNames),4) && ...
isequal(numel(meth.OutputNames),2),...
"myMethod has incorrect signature in subclass "+class(obj))
end
end
methods(Abstract)
[out1,out2]=myMethod(obj, in1, in2, in3)
end
end
2 Commenti
Matt J
il 14 Feb 2022
You could ask them to implement it, but I doubt it's as easy as that. When the signature contains varargin or varargout, I imagine things get complicated.
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