When a structure is passed to a function, can we add a field to it?

Question

Mohamed Abd El Raheem 2022-1-20

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https://ww2.mathworks.cn/matlabcentral/answers/1632830-when-a-structure-is-passed-to-a-function-can-we-add-a-field-to-it

评论： Mohamed Abd El Raheem 2022-1-21

As the title suggests:

If I passed a structure variable to a function, can this function add a new field to it and have that stucture among its outputs with the new added field?

Or, do I have to create a new output structure?

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Answer 1

Voss 2022-1-20

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https://ww2.mathworks.cn/matlabcentral/answers/1632830-when-a-structure-is-passed-to-a-function-can-we-add-a-field-to-it#answer_878515

编辑：Voss 2022-1-20

The answer is yes, the function can add a new field and pass the struct back out, and no, you don't have to create a new struct (MATLAB creates a new struct for you).

input = struct('old_field',1);
output = test_function(input);
disp(input);
    old_field: 1
disp(output);
    old_field: 1
    new_field: 2
function in = test_function(in)
    in.new_field = 2;
end