From: Urabe Shyouhei <shyouhei@...>
Date: 2007-09-10T15:00:06+09:00
Subject: Re: New array methods cycle, choice, shuffle (plus bug in cycle)

Wilson Bilkovich wrote:
> So the above code is expected to behave as this would in Ruby 1.8?

No.

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

Enumerator#zip works as the same as Array#zip. The trick is
Array#cycle generates somewhat 'infinite' entries.

irb(main):001:0> x = [1, 0].cycle
=> #<Enumerable::Enumerator:0x002aaaaab557c8>
irb(main):002:0> y = [1, 0, 0, 0, 0]
=> [1, 0, 0, 0, 0]
irb(main):003:0> y.zip x do |z| p z end
[1, 1]
[0, 0]
[0, 1]
[0, 0]
[0, 1]
=> nil
irb(main):004:0>

You know what's happening?