well1791

def fizzbuzz(n)
  acc = 810092048
  messages = [nil, "Fizz", "Buzz", "FizzBuzz"]

  (1..n).each do |i|
    c = acc & 3
    puts messages[c] || i
    acc = acc >> 2 | c << 28
  end
end

well1791

CATEGORY THEORY FOR PROGRAMMERS

Category Theory 1.1: Motivation and Philosophy 
https://www.youtube.com/watch?v=I8LbkfSSR58&index=1&list=PLbgaMIhjbmEnaH_LTkxLI7FMa2HsnawM_

Composability, Abstraction, Reusability

Category Theory is a higher-level language.
Not a practical, executable language.