dkokic

def from(n: Integer): Stream[Integer] = n #:: from(n+1)

def sieve(input: Stream[Integer]): Stream[Integer] = input.head #:: sieve(input.tail.filter(_ % input.head != 0))

def primes = sieve(from(2))

primes take 10 print

dkokic

const fibonacci = (n) => n < 3 ? 1 : fibonacci(n - 1) + fibonacci(n - 2)

const fibonacci = (n, memo = { 1: 1, 2: 1 }) => n in memo ? memo[n] : memo[n] = fibonacci(n - 1) + fibonacci(n - 2)