非常教程

Ruby 2.4参考手册

Ruby 是一种面向对象、命令式、函数式、动态的通用编程语言,是世界上最优美而巧妙的语言。

缩略 | Abbrev
Abbrev 详细
ARGF
数组 | Array
Array 详细
Base64
基本对象 | BasicObject
BasicObject 详细
基准测试 | Benchmark
Benchmark 详细
Benchmark::Tms 详细
BigDecimal
BigMath 详细
Jacobian 详细
LUSolve 详细
Newton 详细
绑定 | Binding
Binding 详细
CGI
CGI::Cookie 详细
CGI::HtmlExtension 详细
CGI::InvalidEncoding 详细
CGI::QueryExtension 详细
CGI::Session 详细
CGI::Session::FileStore 详细
CGI::Session::MemoryStore 详细
CGI::Session::NullStore 详细
CGI::Session::PStore 详细
CGI::Util 详细
类 | Class
Class 详细
比较 | Comparable
Comparable 详细
负责 | Complex
Complex 详细
计算续体 | Continuation
Continuation 详细
覆盖 | Coverage
Coverage 详细
CSV
CSV::MalformedCSVError 详细
CSV::Row 详细
CSV::Table 详细
日期 | Date
Date 详细
日期时间 | DateTime
DateTime 详细
DBM
代理 | Delegator
Delegator 详细
SimpleDelegator 详细
摘要 | Digest
Digest 详细
Digest::Base 详细
Digest::Class 详细
Digest::Instance 详细
Digest::MD5 详细
Digest::RMD160 详细
Digest::SHA1 详细
Dir
DRb
ACL 详细
ACL::ACLEntry 详细
ACL::ACLList 详细
DRb::DRbArray 详细
DRb::DRbBadScheme 详细
DRb::DRbBadURI 详细
DRb::DRbConn 详细
DRb::DRbConnError 详细
DRb::DRbError 详细
DRb::DRbIdConv 详细
DRb::DRbMessage 详细
DRb::DRbObject 详细
DRb::DRbObservable 详细
DRb::DRbProtocol 详细
DRb::DRbRemoteError 详细
DRb::DRbServer 详细
DRb::DRbServerNotFound 详细
DRb::DRbSSLSocket 详细
DRb::DRbSSLSocket::SSLConfig 详细
DRb::DRbTCPSocket 详细
DRb::DRbUndumped 详细
DRb::DRbUNIXSocket 详细
DRb::DRbUnknown 详细
DRb::DRbUnknownError 详细
DRb::ExtServ 详细
DRb::ExtServManager 详细
DRb::GW 详细
DRb::GWIdConv 详细
DRb::TimerIdConv 详细
Rinda 详细
Rinda::DRbObjectTemplate 详细
Rinda::InvalidHashTupleKey 详细
Rinda::NotifyTemplateEntry 详细
Rinda::RequestCanceledError 详细
Rinda::RequestExpiredError 详细
Rinda::RindaError 详细
Rinda::RingFinger 详细
Rinda::RingProvider 详细
Rinda::RingServer 详细
Rinda::SimpleRenewer 详细
Rinda::Template 详细
Rinda::TemplateEntry 详细
Rinda::Tuple 详细
Rinda::TupleBag 详细
Rinda::TupleBag::TupleBin 详细
Rinda::TupleEntry 详细
Rinda::TupleSpace 详细
Rinda::TupleSpaceProxy 详细
Rinda::WaitTemplateEntry 详细
编码 | Encoding
Encoding 详细
Encoding::CompatibilityError 详细
Encoding::Converter 详细
Encoding::ConverterNotFoundError 详细
Encoding::InvalidByteSequenceError 详细
Encoding::UndefinedConversionError 详细
枚举 | Enumerable
Enumerable 详细
枚举 | Enumerator
Enumerator 详细
Enumerator::Generator 详细
Enumerator::Lazy 详细
Enumerator::Yielder 详细
ENV
ERB
ERB::DefMethod 详细
ERB::Util 详细
错误 | Errors
ArgumentError 详细
DBMError 详细
EncodingError 详细
EOFError 详细
Errno 详细
Errno::ECONNABORTED 详细
Errno::ECONNRESET 详细
Errno::EPROTO 详细
fatal 详细
FiberError 详细
FloatDomainError 详细
IndexError 详细
Interrupt 详细
IOError 详细
KeyError 详细
LoadError 详细
LocalJumpError 详细
NameError 详细
NoMemoryError 详细
NoMethodError 详细
NotImplementedError 详细
RangeError 详细
RegexpError 详细
RuntimeError 详细
ScriptError 详细
SDBMError 详细
SecurityError 详细
SignalException 详细
SocketError 详细
StandardError 详细
StopIteration 详细
SyntaxError 详细
SystemCallError 详细
SystemExit 详细
SystemStackError 详细
ThreadError 详细
TypeError 详细
UncaughtThrowError 详细
ZeroDivisionError 详细
Etc
期望值 | Exception
Exception 详细
错误类 | FalseClass
FalseClass 详细
Fiber
Fiddle
Fiddle::BasicTypes 详细
Fiddle::Closure 详细
Fiddle::Closure::BlockCaller 详细
Fiddle::CompositeHandler 详细
Fiddle::CParser 详细
Fiddle::CStruct 详细
Fiddle::CStructBuilder 详细
Fiddle::CStructEntity 详细
Fiddle::CUnion 详细
Fiddle::CUnionEntity 详细
Fiddle::DLError 详细
Fiddle::Function 详细
Fiddle::Handle 详细
Fiddle::Importer 详细
Fiddle::Pointer 详细
文件 | File
File 详细
File::Constants 详细
File::Stat 详细
FileTest 详细
文件实用程序 | FileUtils
FileUtils 详细
FileUtils::DryRun 详细
FileUtils::LowMethods 详细
FileUtils::NoWrite 详细
FileUtils::StreamUtils_ 详细
FileUtils::Verbose 详细
查找 | Find
Find 详细
浮点 | Float
Float 详细
Forwardable
SingleForwardable 详细
GC
GC::Profiler 详细
GDBM
GetoptLong
GetoptLong::Error 详细
Hash
Integer
IO
IO::generic_readable 详细
IO::generic_writable 详细
IPAddr
IPAddr::AddressFamilyError 详细
IPAddr::Error 详细
IPAddr::InvalidAddressError 详细
IPAddr::InvalidPrefixError 详细
JSON
JSON::GenericObject 详细
JSON::JSONError 详细
JSON::MissingUnicodeSupport 详细
JSON::NestingError 详细
JSON::ParserError 详细
JSON::UnparserError 详细
Kernel
语言 | 3Language
Assignment 详细
Calling Methods 详细
Control Expressions 详细
Exception Handling 详细
Keywords 详细
Literals 详细
Marshal Format 详细
Methods 详细
Miscellaneous Syntax 详细
Modules 详细
Pre-defined variables 详细
Precedence 详细
Refinements 详细
Ruby Security 详细
记录 | Logger
Logger 详细
Logger::Formatter 详细
Logger::LogDevice 详细
Logger::Period 详细
Logger::Severity 详细
编排 | Marshal
Marshal 详细
MatchData
数学 | Math
CMath 详细
Math 详细
Math::DomainError 详细
矩阵 | Matrix
Matrix 详细
Matrix::EigenvalueDecomposition 详细
Matrix::LUPDecomposition 详细
方法 | Method
Method 详细
模型 | Module
Module 详细
监控 | Monitor
Monitor 详细
MonitorMixin 详细
MonitorMixin::ConditionVariable 详细
互斥 | Mutex
ConditionVariable 详细
Mutex_m 详细
Net
Net::APOPSession 详细
Net::InternetMessageIO::WriteAdapter 详细
Net::OpenTimeout 详细
Net::POP3 详细
Net::POPAuthenticationError 详细
Net::POPBadResponse 详细
Net::POPError 详细
Net::POPMail 详细
Net::ReadTimeout 详细
Net::FTP
Net::FTP::MLSxEntry 详细
Net::HTTP
Net::HTTP::Copy 详细
Net::HTTP::Delete 详细
Net::HTTP::Get 详细
Net::HTTP::Head 详细
Net::HTTP::Lock 详细
Net::HTTP::Mkcol 详细
Net::HTTP::Move 详细
Net::HTTP::Options 详细
Net::HTTP::Patch 详细
Net::HTTP::Post 详细
Net::HTTP::Propfind 详细
Net::HTTP::Proppatch 详细
Net::HTTP::Put 详细
Net::HTTP::Trace 详细
Net::HTTP::Unlock 详细
Net::HTTPAccepted 详细
Net::HTTPBadGateway 详细
Net::HTTPBadRequest 详细
Net::HTTPClientError 详细
Net::HTTPConflict 详细
Net::HTTPContinue 详细
Net::HTTPCreated 详细
Net::HTTPExceptions 详细
Net::HTTPExpectationFailed 详细
Net::HTTPFailedDependency 详细
Net::HTTPForbidden 详细
Net::HTTPFound 详细
Net::HTTPGatewayTimeOut 详细
Net::HTTPGenericRequest 详细
Net::HTTPGone 详细
Net::HTTPHeader 详细
Net::HTTPIMUsed 详细
Net::HTTPInformation 详细
Net::HTTPInsufficientStorage 详细
Net::HTTPInternalServerError 详细
Net::HTTPLengthRequired 详细
Net::HTTPLocked 详细
Net::HTTPMethodNotAllowed 详细
Net::HTTPMovedPermanently 详细
Net::HTTPMultipleChoices 详细
Net::HTTPMultiStatus 详细
Net::HTTPNetworkAuthenticationRequired 详细
Net::HTTPNoContent 详细
Net::HTTPNonAuthoritativeInformation 详细
Net::HTTPNotAcceptable 详细
Net::HTTPNotFound 详细
Net::HTTPNotImplemented 详细
Net::HTTPNotModified 详细
Net::HTTPOK 详细
Net::HTTPPartialContent 详细
Net::HTTPPaymentRequired 详细
Net::HTTPPermanentRedirect 详细
Net::HTTPPreconditionFailed 详细
Net::HTTPPreconditionRequired 详细
Net::HTTPProxyAuthenticationRequired 详细
Net::HTTPRedirection 详细
Net::HTTPRequest 详细
Net::HTTPRequestedRangeNotSatisfiable 详细
Net::HTTPRequestEntityTooLarge 详细
Net::HTTPRequestHeaderFieldsTooLarge 详细
Net::HTTPRequestTimeOut 详细
Net::HTTPRequestURITooLong 详细
Net::HTTPResetContent 详细
Net::HTTPResponse 详细
Net::HTTPSeeOther 详细
Net::HTTPServerError 详细
Net::HTTPServiceUnavailable 详细
Net::HTTPSuccess 详细
Net::HTTPSwitchProtocol 详细
Net::HTTPTemporaryRedirect 详细
Net::HTTPTooManyRequests 详细
Net::HTTPUnauthorized 详细
Net::HTTPUnavailableForLegalReasons 详细
Net::HTTPUnknownResponse 详细
Net::HTTPUnprocessableEntity 详细
Net::HTTPUnsupportedMediaType 详细
Net::HTTPUpgradeRequired 详细
Net::HTTPUseProxy 详细
Net::HTTPVersionNotSupported 详细
Net::IMAP
Net::IMAP::BadResponseError 详细
Net::IMAP::BodyTypeAttachment 详细
Net::IMAP::BodyTypeBasic 详细
Net::IMAP::BodyTypeExtension 详细
Net::IMAP::BodyTypeMessage 详细
Net::IMAP::BodyTypeMultipart 详细
Net::IMAP::BodyTypeText 详细
Net::IMAP::ByeResponseError 详细
Net::IMAP::CramMD5Authenticator 详细
Net::IMAP::DataFormatError 详细
Net::IMAP::DigestMD5Authenticator 详细
Net::IMAP::Error 详细
Net::IMAP::FlagCountError 详细
Net::IMAP::LoginAuthenticator 详细
Net::IMAP::NoResponseError 详细
Net::IMAP::NumValidator 详细
Net::IMAP::PlainAuthenticator 详细
Net::IMAP::ResponseError 详细
Net::IMAP::ResponseParseError 详细
Net::SMTP
Net::SMTP::Response 详细
Net::SMTPAuthenticationError 详细
Net::SMTPError 详细
Net::SMTPFatalError 详细
Net::SMTPServerBusy 详细
Net::SMTPSyntaxError 详细
Net::SMTPUnknownError 详细
Net::SMTPUnsupportedCommand 详细
NilClass
数字 | Numeric
Numeric 详细
对象 | Object
Object 详细
ObjectSpace
ObjectSpace::InternalObjectWrapper 详细
ObjectSpace::WeakMap 详细
Observable
Open3
OpenSSL
OpenSSL::ASN1 详细
OpenSSL::ASN1::ASN1Data 详细
OpenSSL::ASN1::ASN1Error 详细
OpenSSL::ASN1::Constructive 详细
OpenSSL::ASN1::ObjectId 详细
OpenSSL::ASN1::Primitive 详细
OpenSSL::BN 详细
OpenSSL::BNError 详细
OpenSSL::Buffering 详细
OpenSSL::Cipher 详细
OpenSSL::Cipher::Cipher 详细
OpenSSL::Config 详细
OpenSSL::ConfigError 详细
OpenSSL::Digest 详细
OpenSSL::Digest::DigestError 详细
OpenSSL::Engine 详细
OpenSSL::Engine::EngineError 详细
OpenSSL::ExtConfig 详细
OpenSSL::HMAC 详细
OpenSSL::HMACError 详细
OpenSSL::Netscape 详细
OpenSSL::Netscape::SPKI 详细
OpenSSL::Netscape::SPKIError 详细
OpenSSL::OCSP 详细
OpenSSL::OCSP::BasicResponse 详细
OpenSSL::OCSP::CertificateId 详细
OpenSSL::OCSP::OCSPError 详细
OpenSSL::OCSP::Request 详细
OpenSSL::OCSP::Response 详细
OpenSSL::OCSP::SingleResponse 详细
OpenSSL::OpenSSLError 详细
OpenSSL::PKCS12 详细
OpenSSL::PKCS5 详细
OpenSSL::PKCS5::PKCS5Error 详细
OpenSSL::PKCS7 详细
OpenSSL::PKCS7::RecipientInfo 详细
OpenSSL::PKCS7::SignerInfo 详细
OpenSSL::PKey 详细
OpenSSL::PKey::DH 详细
OpenSSL::PKey::DHError 详细
OpenSSL::PKey::DSA 详细
OpenSSL::PKey::DSAError 详细
OpenSSL::PKey::EC 详细
OpenSSL::PKey::EC::Group 详细
OpenSSL::PKey::EC::Point 详细
OpenSSL::PKey::PKey 详细
OpenSSL::PKey::PKeyError 详细
OpenSSL::PKey::RSA 详细
OpenSSL::PKey::RSAError 详细
OpenSSL::Random 详细
OpenSSL::SSL 详细
OpenSSL::SSL::Session 详细
OpenSSL::SSL::SocketForwarder 详细
OpenSSL::SSL::SSLContext 详细
OpenSSL::SSL::SSLError 详细
OpenSSL::SSL::SSLServer 详细
OpenSSL::SSL::SSLSocket 详细
OpenSSL::X509::Attribute 详细
OpenSSL::X509::Certificate 详细
OpenSSL::X509::CRL 详细
OpenSSL::X509::Extension 详细
OpenSSL::X509::ExtensionFactory 详细
OpenSSL::X509::Name 详细
OpenSSL::X509::Name::RFC2253DN 详细
OpenSSL::X509::Request 详细
OpenSSL::X509::Revoked 详细
OpenSSL::X509::Store 详细
OpenSSL::X509::StoreContext 详细
OpenStruct
OpenURI
OpenURI::HTTPError 详细
OpenURI::HTTPRedirect 详细
OpenURI::Meta 详细
OpenURI::OpenRead 详细
OptionParser
OptionParser::AC 详细
OptionParser::Acceptables 详细
OptionParser::AmbiguousArgument 详细
OptionParser::AmbiguousOption 详细
OptionParser::Arguable 详细
OptionParser::CompletingHash 详细
OptionParser::Completion 详细
OptionParser::InvalidArgument 详细
OptionParser::InvalidOption 详细
OptionParser::List 详细
OptionParser::MissingArgument 详细
OptionParser::NeedlessArgument 详细
OptionParser::OptionMap 详细
OptionParser::ParseError 详细
OptionParser::Switch 详细
OptionParser::Switch::NoArgument 详细
OptionParser::Switch::OptionalArgument 详细
OptionParser::Switch::PlacedArgument 详细
OptionParser::Switch::RequiredArgument 详细
路径名 | Pathname
Pathname 详细
完整输出 | PrettyPrint
PP 详细
PP::PPMethods 详细
PrettyPrint 详细
PrettyPrint::SingleLine 详细
Prime
Prime::EratosthenesGenerator 详细
Prime::EratosthenesSieve 详细
Prime::Generator23 详细
Prime::PseudoPrimeGenerator 详细
Prime::TrialDivision 详细
Prime::TrialDivisionGenerator 详细
Proc
过程 | Process
Process 详细
Process::GID 详细
Process::Status 详细
Process::Sys 详细
Process::UID 详细
Process::Waiter 详细
PStore
PStore::Error 详细
PTY
PTY::ChildExited 详细
队列 | Queue
Queue 详细
SizedQueue 详细
随机 | Random
Random 详细
Random::Formatter 详细
范围 | Range
Range 详细
合理的 | Rational
Rational 详细
Readline
Regexp
Resolv
Resolv::DNS 详细
Resolv::DNS::Config::NXDomain 详细
Resolv::DNS::Config::OtherResolvError 详细
Resolv::DNS::DecodeError 详细
Resolv::DNS::EncodeError 详细
Resolv::DNS::Name 详细
Resolv::DNS::Query 详细
Resolv::DNS::Requester::RequestError 详细
Resolv::DNS::Resource 详细
Resolv::DNS::Resource::ANY 详细
Resolv::DNS::Resource::CNAME 详细
Resolv::DNS::Resource::DomainName 详细
Resolv::DNS::Resource::Generic 详细
Resolv::DNS::Resource::HINFO 详细
Resolv::DNS::Resource::IN 详细
Resolv::DNS::Resource::IN::A 详细
Resolv::DNS::Resource::IN::AAAA 详细
Resolv::DNS::Resource::IN::SRV 详细
Resolv::DNS::Resource::IN::WKS 详细
Resolv::DNS::Resource::LOC 详细
Resolv::DNS::Resource::MINFO 详细
Resolv::DNS::Resource::MX 详细
Resolv::DNS::Resource::NS 详细
Resolv::DNS::Resource::PTR 详细
Resolv::DNS::Resource::SOA 详细
Resolv::DNS::Resource::TXT 详细
Resolv::Hosts 详细
Resolv::IPv4 详细
Resolv::IPv6 详细
Resolv::LOC::Alt 详细
Resolv::LOC::Coord 详细
Resolv::LOC::Size 详细
Resolv::MDNS 详细
Resolv::ResolvError 详细
Resolv::ResolvTimeout 详细
Ripper
Ripper::Filter 详细
RubyVM
RubyVM::InstructionSequence 详细
Scanf
SDBM
SecureRandom
Set
SortedSet 详细
Shell
Shellwords 详细
信号 | Signal
Signal 详细
Singleton
套接字 | Socket
Addrinfo 详细
BasicSocket 详细
IPSocket 详细
Socket 详细
Socket::AncillaryData 详细
Socket::Constants 详细
Socket::Ifaddr 详细
Socket::Option 详细
Socket::UDPSource 详细
SOCKSSocket 详细
TCPServer 详细
TCPSocket 详细
UDPSocket 详细
UNIXServer 详细
UNIXSocket 详细
字符串 | String
String 详细
StringIO
StringScanner
结构 | Struct
Struct 详细
符号 | Symbol
Symbol 详细
同步 | Sync
Sync 详细
Synchronizer 详细
Synchronizer_m 详细
Sync_m 详细
Sync_m::Err 详细
Sync_m::Err::LockModeFailer 详细
Sync_m::Err::UnknownLocker 详细
系统日志 | Syslog
Syslog 详细
Syslog::Constants 详细
Syslog::Logger 详细
Syslog::Logger::Formatter 详细
Syslog::Macros 详细
临时文件 | Tempfile
Tempfile 详细
TempIO 详细
线 | Thread
Thread 详细
Thread::Backtrace::Location 详细
Thread::Mutex 详细
ThreadGroup 详细
ThreadsWait 详细
ThWait 详细
时间 | Time
Time 详细
时间耗尽 | Timeout
Timeout 详细
Timeout::Error 详细
Timeout::TimeoutError 详细
追踪点 | TracePoint
TracePoint 详细
追踪 | Tracer
Tracer 详细
实类 | TrueClass
TrueClass 详细
TSort
UnboundMethod
URI
URI::BadURIError 详细
URI::Error 详细
URI::Escape 详细
URI::FTP 详细
URI::Generic 详细
URI::HTTP 详细
URI::HTTPS 详细
URI::InvalidComponentError 详细
URI::InvalidURIError 详细
URI::LDAP 详细
URI::LDAPS 详细
URI::MailTo 详细
URI::RFC2396_Parser 详细
URI::RFC2396_REGEXP 详细
URI::RFC2396_REGEXP::PATTERN 详细
向量 | Vector
Vector 详细
警告 | Warning
Warning 详细
WeakRef
WeakRef::RefError 详细
YAML
Psych 详细
YAML::DBM 详细
YAML::Store 详细
YAML::Syck 详细
Zlib
Zlib::BufError 详细
Zlib::DataError 详细
Zlib::Deflate 详细
Zlib::Error 详细
Zlib::GzipFile 详细
Zlib::GzipFile::CRCError 详细
Zlib::GzipFile::Error 详细
Zlib::GzipFile::LengthError 详细
Zlib::GzipFile::NoFooter 详细
Zlib::GzipReader 详细
Zlib::GzipWriter 详细
Zlib::Inflate 详细
Zlib::MemError 详细
Zlib::NeedDict 详细
Zlib::StreamEnd 详细
Zlib::StreamError 详细
Zlib::VersionError 详细
Zlib::ZStream 详细
Ruby 环境变量
Ruby 命令行选项
Ruby 安装 – Windows
Ruby 安装 – Linux
Ruby 环境
Ruby 简介
Ruby 循环
Ruby 条件判断
Ruby 注释
Ruby 运算符
Ruby 变量
Ruby 类案例
Ruby 类和对象
Ruby 语法
Ruby 模块(Module)
Ruby 块
Ruby 方法
Ruby 数组(Array)
Ruby 字符串(String)
Ruby 异常
Ruby Dir 类和方法
Ruby File 类和方法
Ruby 文件的输入与输出
Ruby 迭代器
Ruby 范围(Range)
Ruby 日期 & 时间(Date & Time)
Ruby 哈希(Hash)
Ruby DBI Read 操作
Ruby 正则表达式
Ruby 面向对象
Ruby CGI方法
Ruby 多线程
Ruby Web Service 应用 – SOAP4R
Ruby XML, XSLT 和 XPath 教程
Ruby Socket 编程
Ruby 发送邮件 – SMTP
Ruby CGI Session
Ruby CGI Cookie
Ruby 数据类型
Ruby JSON
Ruby RubyGems
Ruby 中文编码
Ruby 连接 Mysql – MySql2

Ruby 2.4资料

主页 https://www.ruby-lang.org/
源码 https://github.com/ruby/ruby
版本 2.4
发布版本 2.4.1

Ruby 2.4目录

1.缩略 | Abbrev
2.ARGF
3.数组 | Array
4.Base64
5.基本对象 | BasicObject
6.基准测试 | Benchmark
7.BigDecimal
8.绑定 | Binding
9.CGI
10.类 | Class
11.比较 | Comparable
12.负责 | Complex
13.计算续体 | Continuation
14.覆盖 | Coverage
15.CSV
16.日期 | Date
17.日期时间 | DateTime
18.DBM
19.代理 | Delegator
20.摘要 | Digest
21.Dir
22.DRb
23.编码 | Encoding
24.枚举 | Enumerable
25.枚举 | Enumerator
26.ENV
27.ERB
28.错误 | Errors
29.Etc
30.期望值 | Exception
31.错误类 | FalseClass
32.Fiber
33.Fiddle
34.文件 | File
35.文件实用程序 | FileUtils
36.查找 | Find
37.浮点 | Float
38.Forwardable
39.GC
40.GDBM
41.GetoptLong
42.Hash
43.Integer
44.IO
45.IPAddr
46.JSON
47.Kernel
48.语言 | 3Language
49.记录 | Logger
50.编排 | Marshal
51.MatchData
52.数学 | Math
53.矩阵 | Matrix
54.方法 | Method
55.模型 | Module
56.监控 | Monitor
57. 互斥 | Mutex
58.Net
59.Net::FTP
60.Net::HTTP
61.Net::IMAP
62.Net::SMTP
63.NilClass
64.数字 | Numeric
65.对象 | Object
66.ObjectSpace
67.Observable
68.Open3
69.OpenSSL
70.OpenStruct
71.OpenURI
72.OptionParser
73.路径名 | Pathname
74.完整输出 | PrettyPrint
75.Prime
76.Proc
77.过程 | Process
78.PStore
79.PTY
80.队列 | Queue
81.随机 | Random
82.范围 | Range
83.合理的 | Rational
84.Readline
85.Regexp
86.Resolv
87.Ripper
88.RubyVM
89.Scanf
90.SDBM
91.SecureRandom
92.Set
93.Shell
94.信号 | Signal
95.Singleton
96.套接字 | Socket
97.字符串 | String
98.StringIO
99.StringScanner
100.结构 | Struct