class Refinement: Refinement is a class of the +self+ (current context) inside +refine+ statement. It allows to import methods from other modules, see #import_methods.

Documentation for the IO::generic_writable module

Documentation for the IRB::Statement::EmptyInput class

class IO::Buffer::LockedError: Raised when an operation would resize or re-allocate a locked buffer.

Documentation for the OpenSSL::SSL::SSLErrorWaitReadable class

Documentation for the Net::ProtoServerError class

class ObjectSpace::InternalObjectWrapper: You can use the #type method to check the type of the internal object.

class Net::HTTPNonAuthoritativeInformation: Web accelerator) that received a 200 OK response from its origin, and is returning a modified version of the origin's response. HTTPHeader@Getters].

class Net::HTTPNetworkAuthenticationRequired: The client needs to authenticate to gain network access. HTTPHeader@Getters].

Documentation for the Net::ProtocRetryError class