Use Object Tap instead return

gistfile1.rb

 #!/usr/bin/env ruby
 # http://blog.rubybestpractices.com/posts/gregory/011-tap-that-hash.html
 # http://www.ruby-doc.org/core-1.9.3/Object.html#method-i-tap
 
class TestingObjectTap
  
  def legacy
    results = {}  
    [:x, :y, :z].each do |letter|  
      results[letter] = rand(100)  
    end  
    results  
  end  
  
  def smart
    returning({}) do |results|  
      [:x, :y, :z].each do |letter|  
        results[letter] = rand(100)  
      end  
    end  
  end  
  
  def sexy
    {}.tap do |results|  
      [:x, :y, :z].each do |letter|  
        results[letter] = rand(100)  
      end  
    end  
  end  
  
  private 
  
  def returning(obj)  
    yield(obj)  
    obj  
  end
  
end

begin
  object = TestingObjectTap.new
  puts object.legacy
  puts object.smart
  puts object.sexy
end

# ruby object_tap.rb 
# {:x=>74, :y=>90, :z=>42}
# {:x=>26, :y=>81, :z=>52}
# {:x=>85, :y=>13, :z=>24}