gistfile1.sh

$ cat let.rb 
describe do
  let!(:a) { puts 'first let' }
  before { puts 'before' }
  let!(:b) { puts 'second let' }

  it { true.should be_true }
end

$ rspec let.rb
first let
before
second let
.

Finished in 0.00272 seconds
1 example, 0 failures