Ruby 2.4 Zlib 目录 Zlib Zlib::BufError Zlib::DataError Zlib::Deflate Zlib::Error Zlib::GzipFile Zlib::GzipFile::CRCError Zlib::GzipFile::Error Zlib::GzipFile::LengthError Zlib::GzipFile::NoFooter Zlib::GzipReader Zlib::GzipWriter Zlib::Inflate Zlib::MemError Zlib::NeedDict Zlib::StreamEnd Zlib::StreamError Zlib::VersionError Zlib::ZStream
Ruby 2.4 
