From: Steven Lumos <steven@...>
Date: 2006-03-03T03:06:56+09:00
Subject: Re: Your Favorite One Liner

Jeffrey Schwab <jeff@schwabcenter.com> writes:

> William James wrote:
>> 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.
>
> mv primes.rb non_composite_natural_numbers.rb

Or just remove "[1]<<".  The above actually builds an array like:

  [1, [2, 3, 5,...]]

which probably isn't what you want anyway.

Steve