Ruby version 1.8.6
Mac OS 10.5.2
I would like a Ruby script to do something if a result is a prime
number, or do something else if the result is not prime. But Ruby is
hanging on instance_of_Prime.includes?(some prime number). For example,
in irb:
$ irb
require ‘mathn’
=> truefoo=Prime.new
=> #<Prime:0x32bab8 @primes=[], @seed=1, @counts=[]>puts foo.include?(2)
true
=> nilputs foo.include?(1)
Expected:
false
Got:
Nothing, and programs won’t exit.