That is true! You're right that the perspective can be different.
You could write <T: Into<Option<i32>> if you wanted, and your callers wont change.
Frankly, using options as parameters is just not generally good design, so this issue doesn't really come up very often, in my experience. There are exceptions, but it's exceedingly rare.
You could write <T: Into<Option<i32>> if you wanted, and your callers wont change.
Frankly, using options as parameters is just not generally good design, so this issue doesn't really come up very often, in my experience. There are exceptions, but it's exceedingly rare.