gistfile1.txt

describe "let" do
  let(:count) { @x = 0 }
  let(:count_plus_1) { @x += 1}

  it "memoizes the value" do
    count.should == 0
    count_plus_1.should == 1
  end

  it "is not cached across examples" do
    count_plus_1.should == 2 #undefined method + for nil NIlClass
    count.should == 2
  end
end