From: ara.t.howard@...
Date: 2006-02-03T04:39:21+09:00
Subject: Re: Chomping and stomping

On Fri, 3 Feb 2006, James Edward Gray II wrote:

> 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

golfing

   def chomper() STDIN.detect{|x| x =~ /^qq/ or puts "hit me"} end

-a

-- 
happiness is not something ready-made.  it comes from your own actions.
- h.h. the 14th dali lama