Fire and Forget in Ruby

fire_and_forget.rb

# -*- encoding: utf-8; mode: ruby; tab-width: 2; indent-tabs-mode: nil -*-

def fire_and_forget &block
  raise ::LocalJumpError, "No block given" unless block_given?
  Process.detach(fork &block)
end

# Demo

puts "main"

fire_and_forget do
  sleep 2
  puts "fork"
end

puts "main"