From: _why <why@...>
Date: 2007-03-26T15:53:23+09:00
Subject: Re: how to tranlsate number to binary?

On Mon, Mar 26, 2007 at 10:26:35AM +0900, Ak 756 wrote:
> For example, for input.txt as
> 
> 903
> 1047
> 
> I will get a new file as
> 
> 100100000011
> 0001000001000111
> 

  >> 0x903.to_s(2)
  => "100100000011"
  >> 0x1047.to_s(2)
  => "1000001000111"

And so it was:

  puts IO.read('input.txt').map { |x| x.to_i(16).to_s(2) }.join

_why