rspec

$ gem list rspec

*** LOCAL GEMS ***

$ sudo gem install rspec --prerelease
Successfully installed rspec-core-2.0.0.a2
Successfully installed rspec-expectations-2.0.0.a2
Successfully installed rspec-mocks-2.0.0.a2
Successfully installed rspec-2.0.0.a2
4 gems installed

rspec

Feature: code-breaker submits guess

  The code-breaker submits a guess of four numbers.  The game marks the guess
  with + and - signs.

  For each number in the guess that matches the number and position of a number
  in the secret code, the mark includes one +. For each number in the guess
  that matches the number but not the position of a number in the secret code,
  a - is added to the mark.

rspec

require 'benchmark'

n = 1_000_000
h = {:a => {'a' => 'A'}, :b => {'b' => 'B'}}

puts %Q{
  h.each {|kv| kv[1]}
  
}
Benchmark.benchmark do |bm|