include_vs_extend

include_vs_extend.rb

module Foo

  def bar
    
  end

  def baz
    
  end

end

module Baz
  def foo
    
  end

  def bar
    
  end

end

module Caz
  100.times do |i|
    define_method "meth_#{i}" do
     a = 1
    end
  end
end

class User
  include Foo
  include Baz
  include Caz
end

class BlankUser
end

u = User.new
bu = BlankUser.new

require 'benchmark'

n = 1_000_000;
Benchmark.bmbm do |x|
  x.report("include") { n.times { u.bar } }
  x.report("extend") { bu.extend(Foo); n.times { bu.bar } }
end