Showing warning when function result is not assigned to variable

Question

I have a function that returns a modified copy of the object that was passed to this function. I often do something like this:

obj = obj.Foo(param);

Don't ask why, I simply have to. But sometimes, I (and others) forgot to assign the return value, doing this:

obj.Foo(param);

which repeatedly leads to time-consuming debugging.

Is there any way to show a warning or error every time when the function result is not assigned to a variable? Or any other suggestions on how to solve this issue?

Answer 1

You could use an out parameter, so the call would look like this:

obj.Foo(param, out obj);