This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# OpenSSL::ASN1::ASN1Data.to_der (from ruby core) ### Implementation from ASN1Data --- asn1.to_der => DER-encoded String --- Encodes this ASN1Data into a DER-encoded String value. The result is DER-encoded except for the possibility of indefinite length forms. Indefinite length forms are not allowed in strict DER, so strictly speaking the result of such an encoding would be a BER-encoding.
This is MURDOC! A Ruby documentation browser inspired by Smalltalk-80. It allows you to learn about Ruby by browsing through its class hierarchies, and see any of its methods.