mustBeMember validation problem failure

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RST
RST 2023-10-26
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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采纳的回答

RST
RST 2023-10-26
编辑：RST 2023-10-26
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

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