mustBeMember validation problem failure

Question

RST 2023-10-26

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2039051-mustbemember-validation-problem-failure

编辑： RST 2023-10-26

This class fails property validation on construction

classdef validationTester
    properties
        coupling (1,:) char {mustBeMember(coupling,{'DC', 'AC'})} = 'DC'
    end % public properties
end % classdef

with message

>> vt = validationTester
Error setting default value of property 'coupling' of class 'validationTester'. Value must be a
member of this set:
    'DC'
    'AC' 

Why is this?

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Answer 1

RST 2023-10-26

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2039051-mustbemember-validation-problem-failure#answer_1341216

编辑：RST 2023-10-26

在 MATLAB Online 中打开

Self answer.

The char array is being forced into a column vector not the intended row vector. We want the size to be constrained to (1,:) not (:,1).

We should have:

classdef validationTester
    properties
        coupling (1,:) char {mustBeMember(coupling,{'DC', 'AC'})} = 'DC'
    end % public properties
end % classdef