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/

https://github.com/solodon4/Mach7 (note that imperative code is always faster:C switch is in the lead, and computed goto will be even faster for many cases)
If safety is needed, tagged unions in C are perfectly safe to use and don't require handling NULLs.