> we need V? > - to represent the L variation of a Q type. > - to interact with generics that are not reified.
These are the proximate causes, but I think this undersells it. > V? does that but does far more, V? is a super type of V which is dangerous, > because people will use it as parameter of function instead of V because it's > a super type and works with null. > Here we are back to a world were every value types may be null. Whoa, I think you just skipped a few dozen steps … Perhaps you could clarify this with some examples of “I worry people will write __ instead of ___, and then __ will happen.” > I believe that the issue is that V? should work as a box and currently V? is > to powerful/useful as a box so people will start to use it as a true type. Again, lots to unpack here: - What, in your mind, is the difference between a box and an adjunction? - What benefits do box types give here? - What risks do you envision from “using V? as a true type”?
