Calling static method of a class from within same class

Question

Clarence Domond 2021-8-4

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/892537-calling-static-method-of-a-class-from-within-same-class

编辑： Prince Kumar 2021-8-13

I am defining a static method which takes an object as input as such:

methods(Static)
        function isEnsRltd = IsEnsembleRelated(var)
            if var.IsEnsembleDependent
                isEnsRltd = true;
            else
                isEnsRltd = false;
            end
        end
    end

However, I am receiving an error 'Unable to resolve the name VariableContainer.IsEnsembleRelated.' whenever I try using the function.

I have no idea why. The function is called from within the same class it is defined, which shouldn't cause a problem unless MatLab doesn't allow.

This is the code where it is called:

function isEnsDep = get.IsEnsembleDependent(this)
            isEnsDep = false;
            if strcmp(this.Method, someString)
                isEnsDep = true;
                return;
            end
            for ct = 1:numel(this.SourceVar)
                if VariableContainer.IsEnsembleRelated(this.SourceVar(ct))
                    return;
                end
            end
        end

I am still fairly new to MatLab OOP, thank you.

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Jeff Miller 2021-8-4

Sorry, I don't see what's wrong. But I have definitely called static functions like this from within their classes. Just grasping at a few more straws:

And that classdef is in a file called VariableContainer.m?

And VariableContainer.m is available on the matlab path?

Clarence Domond 2021-8-4

Yes to the first question. As for the second question, it should be on the matlab path because the file can be accessed just fine. As a matter of fact, every other functions in the file work perfectly, but the one I just created doesn't. I am thinking maybe I need to add an access specifier, but I really shouldn't have to. One more detail, when I hover my mouse over the function, it isn't highlighted, meaning it's as if it doesn't exist.

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Answer 1

Prince Kumar 2021-8-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/892537-calling-static-method-of-a-class-from-within-same-class#answer_766087

编辑：Prince Kumar 2021-8-13

VariableContainer.m

From my understating you are trying to call a static method IsEnsembleRelated of class VariableContainer from the same class. After looking at the code snippets provided by you, I have clubbed together the methods into a class VariableContainer and do not see any issue with in calling the static method IsEnsembleRelated. Look at the attached code.

From what I see, your get method IsEnsembleDependent is calling the static method IsEnsembleRelated which again calls IsEnsembleDependent and this causes a recursion but MATLAB prevents recursive calling of get method. Please refer the document for property get method.