From: pluskid <pluskid@...>
Date: 2008-02-19T18:29:56+09:00
Subject: Where is Fiber::Core in Ruby 1.9?

Hi! I found some articles introduce the Fiber in Ruby 1.9. And also
Fiber::Core as the coroutine support in Ruby. Here's an example:

require 'fiber'

f = g = nil

f = Fiber::Core.new { |x|
  puts "F1: #{x}"
  x = g.transfer(x+1)
  puts "F2: #{x}"
  x = g.transfer(x+1)
  puts "F3: #{x}"
}

g = Fiber::Core.new { |x|
  puts "G1: #{x}"
  x = f.transfer(x+1)
  puts "G2: #{x}"
  x = f.transfer(x+1)
}

f.transfer(100)


But when I run this example, I got an error:

NameError: uninitialized constant Fiber::Core

I'm using Ruby1.9 package of Debian lenny: Version: 1.9.0.0-2

Is the api changed? Or has Fiber::Core been removed? Thanks!