andand_bench.rb

require 'rubygems'
require 'andand'
require 'benchmark'

include Benchmark
t = 1_000_000

class A
  attr_accessor :foo
end

class B
  def bar
    "bar"
  end
end

a = A.new
a.foo = B.new
b = A.new

bm(30) do |x|
  x.report("andand"){ t.times{ a.foo.andand.bar }}
  x.report("if"){ t.times{ a.foo.bar if a.foo }}
  x.report("andand with nil"){ t.times{ b.foo.andand.bar }}
  x.report("if with nil"){ t.times{ b.foo.bar if b.foo }}
end