module Sinatra
module Sinatra::Delegator
module Sinatra::Helpers
module Sinatra::Templates
module Sinatra::Templates::ContentTyped
class Sinatra::Application
class Sinatra::Base
class Sinatra::CommonLogger
class Sinatra::ExtendedRack
class Sinatra::Helpers::Stream
class Sinatra::NotFound
class Sinatra::Request
class Sinatra::Request::AcceptEntry
class Sinatra::Response
class Sinatra::ShowExceptions
class Sinatra::Wrapper
sinatra
1.4.0.c
# callback
def callback(&block) return yield if @closed @callbacks << block end