ruby fibers exercise

fibers.rb

require 'fiber'

fib = Fiber.new do
  v = 0
  loop do
    v += 1
    Fiber.yield v
    v.times { print "-"}
    puts v
  end
end

20.times{fib.resume}

foo, bar, baz = nil

foo = Fiber.new do
  p 'hello foo'
  bar.transfer
end

bar = Fiber.new do
  p 'hello bar'
  baz.transfer
end

baz = Fiber.new do
  p 'hello baz'
  foo.transfer
end

foo.resume