From: Christian Neukirchen <chneukirchen@...>
Date: 2005-04-23T00:12:05+09:00
Subject: Re: [QUIZ] HighLine (#29)

Ruby Quiz <james@grayproductions.net> writes:

> What I really think we need here is to take a page out of the optparse book. 
> Here are some general ideas:
>
> 	age = ask("What is your age?", Integer, :within => 0..105)
> 	num = eval "0b#{ ask( 'Enter a binary number.',
> 	                      String, :validate => /^[01_]+$/ ) }"

Do not ever do that.

irb(main):004:0> Integer("0b1011")
=> 11
irb(main):005:0> "1011".to_i(2)
=> 11

irb(main):006:0> "foo\nbar" =~ /^foo$/
=> 0

-- 
Christian Neukirchen  <chneukirchen@gmail.com>  http://chneukirchen.org