please correct me

foo.rake

namespace :myapp do
  def invoke(tasks) # did I really need to write this method? aargh
    tasks.each {|t| Rake::Task[t].invoke}
  end

  desc "dump everything (in order to re-seed)"
  task :renew do
    invoke(%w{db:drop db:create db:migrate})
  end
end

task :renew => ['db:drop', 'db:create', 'db:migrate']