MATLAB OOP - calling an object method from within another object method

Question

Raymond 2012-4-2

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https://ww2.mathworks.cn/matlabcentral/answers/34303-matlab-oop-calling-an-object-method-from-within-another-object-method

编辑： Adam 2018-3-21

采纳的回答： Kye Taylor

i created two objects from two different classes. how do i call one object from within the other?

any advice would be very much appreciated. thanks.

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Answer 1

Kye Taylor 2012-4-2

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One way is via composition: (see http://en.wikipedia.org/wiki/Object_composition)

Let your two classes be class A and class B. Inside a property block of the class definition file for class A, include a variable, say bObj, that you intend to be an instance of class B. Then, in the constructor of class A, instantiate this instance of class B

bOjb = B(...)

Assuming that method m() of class B is public, invoke it anywhere in class definition file for class A with

bObj.m(...)

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Walter Roberson 2012-4-2

That's why Kye said "Assuming that method m() of class B is public". If they _are_ public, then just use what Kye showed. If they are not public, you have difficulties.

Raymond 2012-4-3

thanks guys!

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Answer 2

Hadar 2018-3-21

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hi, if class A and B definitions (properties and methods) are in different files (each of them is in its own file), how can class A "see" B and instantiate it? I get an error of undefined.