From: Wilson Bilkovich <wilsonb@...>
Date: 2007-09-08T03:08:01+09:00
Subject: Re: New array methods cycle, choice, shuffle (plus bug in cycle)

On 9/7/07, Urabe Shyouhei <shyouhei@ruby-lang.org> wrote:
> Wilson Bilkovich wrote:
> > Could someone explain the Array#cycle / Enumerable#cycle use case to me?
> > I'm not seeing it.
>
> fizz = ['Fizz', '', ''].cycle
> buzz = ['buzz', '', '', '', ''].cycle
> fizzbuzz = fizz.zip buzz
>
> fizzbuzz.each_with_index do |i, j|
>    k = i.join
>    puts k.empty? ? j : k
> end
>

So the above code is expected to behave as this would in Ruby 1.8?

fizz = ['Fizz', '', '']
buzz = ['buzz', '', '', '', '']
fizzbuzz = fizz.zip buzz
count = 0
loop do
  fizzbuzz.each do |i|
    k = i.join
    puts k.empty? ? count : k
    count += 1
  end
end

..or does zipping an external enumerator with 'more' entries operate
differently than zipping the two Arrays?