Library for importing and caching bibliographic references to technical standards library Usage Exclude attributes when compare require "relaton-core" pubid_first = Identifier.parse("ISO 1:1999") pubid_second = Identifier.parse("ISO 1") pubid_first == pubid_second => false pubid_first.exclude(:year) == pubid_second => true Using #to_h to convert identifier to hash require "pubid-core" pubid = Identifier.parse("ISO 1:1999") pubid.to_h => { publisher: "ISO", number: 1, year: 1999 } Using #new_edition_of? to compare identifiers require "pubid-core" pubid_first = Identifier.parse("ISO 1:1999") pubid_second = Identifier.parse("ISO 1:2000") pubid_first.new_edition_of?(pubid_second) => false pubid_second.new_edition_of?(pubid_first) => true