extract an enumeration inside a struct in matlab

In MATLAB, you can extract an enumeration inside a struct using the fieldnames function. Consider the following code:

main.m
% Define an enumeration
classdef MyEnum
    enumeration
        Value1
        Value2
        Value3
    end
end

% Define a struct with an enumeration field
myStruct.myEnumField = MyEnum.Value2;

% Extract the enumeration value
enumValue = myStruct.myEnumField;
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In the code above, we define an enumeration called MyEnum with three values. We then define a struct called myStruct with a field called myEnumField which is set to MyEnum.Value2.

To extract the enumeration value from the struct, we simply assign it to a variable using dot notation (myStruct.myEnumField), as shown above. The result will be the enumeration value (in this case, MyEnum.Value2).

Note that it's also possible to extract the field names of a struct using the fieldnames function. For example, we could use the following code to get the field names of myStruct:

main.m
% Get the field names of myStruct
fieldNames = fieldnames(myStruct);

% Show the result
disp(fieldNames);
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The result of this code would be:

main.m
'myEnumField'
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