From: William James <w_a_x_man@...>
Date: 2006-03-02T06:23:38+09:00
Subject: Re: Your Favorite One Liner


Farrel Lifson wrote:
> Whoops here it is....
>
> farrel@nicodemus ~ $ cat primes.rb
> puts [1]<<(2..ARGV[0].to_i).inject([]){|p,c|p.detect{|n|c%n==0}?p:p<<c}
> farrel@nicodemus ~ $ ruby primes.rb 30
> 1
> 2
> 3
> 5
> 7
> 11
> 13
> 17
> 19
> 23
> 29

1 isn't a prime number.