From: William James <w_a_x_man@...>
Date: 2007-12-08T20:45:01+09:00
Subject: Re: Ruby Nuby Question

On Dec 7, 1:12 pm, Nigama Xx <niga...@gmail.com> wrote:
> Hello,
>
> I am just learning Ruby, via several resources (online: Why's,
> downloaded PDF's, and Chris Pine's book "Learn to Program Ruby").  I
> finished Chris Pine's book and was going back through doing any of the
> exercises I hadn't done the first time and trying to mess with/break the
> programs I had done the first time through.
>
> In looking back over my code and trying to clean things up, I managed to
> think of two good questions I can't seem to find the answer to
> elsewhere.  I figured this was the brightest and smartest group of
> Ruby-heads out there. :)
>
> I'll ask my questions first and put the code from the program down
> below.  The assignment asked us to create a "Deaf Grandmother" program,
> which you could only get out of by saying "BYE" to in all caps, three
> times.
>
> The first question I had was, for some reason, if you input "BYE!" for
> the second or third required "BYE" (to exit/end the program), it
> launches into an infinite loop.  Why is that?  BYE works correctly.
> What is it about "BYE!"?
>
> Second question is... what if I wanted the program to require you to say
> "BYE" three times in a row instead of just three times throughout the
> conversation.  Is there any easy way to do this?
>
> Okay, thanks for your time, the code from the program is below..
>
> [code]
> talk = 'I <3 my grandmother'
> puts 'WHAT A FINE YOUNG GRANDCHILD YOU ARE, COME TO VISIT YOUR DEAR OLD
> GRANNY!  COME IN, COME IN!'
>
> while talk != 'BYE'
> talk = gets.chomp
>   if talk != talk.upcase
>     puts 'HUH?!  SPEAK UP, SONNY!'
>   elsif talk == talk.upcase && talk != 'BYE'
>     year = 1
>     while year < 30
>       year = rand(51)
>     end
>     puts 'NO, NOT SINCE 19' + year.to_s + '!'
>   end
> end
>
> if talk == 'BYE'
>   puts 'WHAT WAS THAT?'
>   talk = gets.chomp
>   while talk != 'BYE'
>       if talk != talk.upcase
>         puts 'HUH?!  SPEAK UP, SONNY!'
>       elsif talk == talk.upcase && talk != 'BYE'
>         year = 1
>         while year < 30
>           year = rand(51)
>         end
>         puts 'NO, NOT SINCE 19' + year.to_s + '!'
>       end
>   end
>
>   if talk == 'BYE'
>       puts 'EYE?  WHAT\'S WRONG WITH YOUR EYE?'
>       talk = gets.chomp
>       while talk != 'BYE'
>           if talk != talk.upcase
>             puts 'HUH?!  SPEAK UP, SONNY!'
>           elsif talk == talk.upcase && talk != 'BYE'
>             year = 1
>             while year < 30
>               year = rand(51)
>             end
>             puts 'NO, NOT SINCE 19' + year.to_s + '!'
>           end
>       end
>
>       if talk == 'BYE'
>         puts 'OH VERY WELL, SEE YOU ANOTHER TIME, THEN!'
>       end
>   end
> end
> [/code]
> --
> Posted viahttp://www.ruby-forum.com/.


history = []
bye_replies = [
  'WHAT WAS THAT?',
  "EYE?  WHAT'S WRONG WITH YOUR EYE?"
]

puts 'WHAT A FINE YOUNG GRANDCHILD YOU ARE, COME TO VISIT
YOUR DEAR OLD GRANNY!  COME IN, COME IN!'

bye_count = 0

while true
  talk = gets.strip
  history << talk

  if talk != talk.upcase
    puts 'HUH?!  SPEAK UP, SONNY!'
  elsif "BYE" == talk
    break  if ['BYE'] * 3 == history[ -3 .. -1 ]
    puts bye_replies[ bye_count % bye_replies.size ]
    bye_count += 1
  else
    year = rand( 21 ) + 30
    puts "NO, NOT SINCE 19#{ year }!"
  end
end

puts 'OH VERY WELL, SEE YOU ANOTHER TIME, THEN!'