Method Missing vs Method Compilation

method_missing_vs_method_compilation.rb

require 'benchmark'

# Defined method
class ExampleA
  def test
    10000 * 10000
  end
end

# Method lookup
class ExampleB < ExampleA
end

# Method Missing
class ExampleC
  def method_missing(name, *args, &block)
    10000 * 10000
  end
end

class ExampleD
end

ExampleD.class_eval do
  def test
    10000 * 10000
  end
end

Benchmark.bm do |b|
  b.report { 100000.times { ExampleA.new.test }}
  b.report { 100000.times { ExampleB.new.test }}
  b.report { 100000.times { ExampleC.new.test }}
  b.report { 100000.times { ExampleD.new.test }}
end