function at referenced value in matlab

In MATLAB, you can achieve pass by reference behavior by using handles to the value instead of the actual value. This way, you can modify the value inside a function and have those modifications reflected outside the function. Here's an example:

main.m
function modifyValue(ref)
    ref.Value = ref.Value + 1;
end

value = 10;
ref.Value = value;

modifyValue(ref);

disp(value); % Outputs 11, because the value was modified by the function
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In this example, the modfiyValue function takes a handle ref as an input, which contains the current value. The function increments this value, and when you call the function with modifyValue(ref), it modifies the value stored in the ref handle.

Make sure to create the initial handle ref correctly by assigning the value to the Value property as shown in the example.