Null pointers are the billion dollar mistake

@davetchepak "What can C# do that F# cannot?"
NullReferenceException :-)

Educating the imperative gorillas about sum types:

https://chadaustin.me/2015/07/sum-types/

>>35
You got conned again. ML ``sum types'' were inl and inr. Pattern matching isn't from functional programming. ``[Y]ou cannot get the payload without checking tag'' is a normal property of a tagged union.

If you want to really unravel the scam, union is a set-theoretic union and tagged union means a union with a label. Neither of those have anything to do with C ``unions'' or ML ``sums''.