Codecademy Sample Solution: The Rubyist's Loop

$VERBOSE = nil    # We'll explain this at the end of the lesson.
require 'prime'   # This is a module. We'll cover these soon!

def first_n_primes(n)

  return "n must be an integer." unless n.is_a? Integer

  return "n must be greater than 0." if n <= 0
 
  prime_array ||= []
 
  prime = Prime.new
  n.times { prime_array.push(prime.next) }
  prime_array
end

first_n_primes(10)