One way to do Cucumber-style scenario tables in RSpec (in reply to @jbrains's question <https://twitter.com/jbrains/status/392794624416579584> )

spec.rb

describe 'scenario tables' do
  scenarios = [
    {given_balance: 10, when_withdrawing: 10, expected_balance:  0},
    {given_balance: 20, when_withdrawing: 10, expected_balance: 10},
    {given_balance: 30, when_withdrawing: 30, expected_balance:  0}
  ]
  scenarios.each_with_index do |scenario, n|
    context "given a starting balance of #{scenario[:given_balance]} (scenario #{n})" do
      it "should have #{scenario[:expected_balance]} left after withdrawing #{scenario[:when_withdrawing]}"
    end
  end
end