From: James Edward Gray II <james@...>
Date: 2006-02-03T03:35:36+09:00
Subject: Re: Chomping and stomping

On Feb 2, 2006, at 11:59 AM, Jacob Fugal wrote:

> On 2/2/06, ara.t.howard@noaa.gov <ara.t.howard@noaa.gov> wrote:
>>    harp:~ > ruby a.rb < /dev/null
>>    a.rb:3:in `chomper': private method `chomp' called for  
>> nil:NilClass (NoMethodError)
>>            from a.rb:9
>>
>> nil doesn't like that!  ;-)
>
> Heh, yeah, I glossed over that too. You really need to check the
> result of gets before you chomp it.

Isn't this why we have iterators in Ruby?  We get to avoid all these  
messy loop ending tests...

> This is the way I'd write John's original loop (same semantics):
>
>   def chomper
>     while xx = gets
>       xx.chomp!
>       break if xx == 'qq'
>       puts "hit me with a squirell!"
>     end
>     xx
>   end

def chomper
   $stdin.each do |line|
     line.chomp!

     return line if line == "qq"

     puts "Hit me with a squirrel!"
   end
end

James Edward Gray II