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Exception
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Classes and Modules

ACL
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Abbrev
Addrinfo
ArgumentError
Array
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Bake
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Base64
BasicObject
BasicSocket
Benchmark
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BigDecimal
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Binding
Bundler
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CGI
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CSV
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Class
ClosedQueueError
ComboFinder
Comparable
- _CompareToZero
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Complex
Console
- Adapter
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- Compatible
  - Logger
    LogDevice
- Config
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  - Generic
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- Filter
- Format
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- Interface
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  - Default
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  - JSON
  - Null
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    Filter
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  - Split
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  - Wrapper
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  - Formatter
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  - Text
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Coverage
DBM
- _ReplaceSource
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DRb
- DRbArray
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- DRbMessage
- DRbObject
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- DRbProtocol
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- DRbSSLSocket
  - SSLConfig
- DRbServer
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- ExtServ
- ExtServManager
- GW
- GWIdConv
- ThreadObject
- TimerIdConv
  - TimerHolder2
    InvalidIndexError
Data
- _DataClass
Date
DateTime
Delegator
DidYouMean
- ClassNameChecker
  - ClassName
- Correctable
- Formatter
- Jaro
- JaroWinkler
- KeyErrorChecker
- Levenshtein
- MethodNameChecker
- NullChecker
- PatternKeyNameChecker
- RequirePathChecker
- SpellChecker
- TreeSpellChecker
- VariableNameChecker
Digest
- Base
- Class
- Instance
- MD5
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- SHA1
- SHA2
- SHA256
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Dir
EOFError
ERB
- DefMethod
- Escape
- Util
Encoding
EncodingError
Enumerable
- _NotFound
- _Pattern
Enumerator
- ArithmeticSequence
- Chain
- Generator
- Lazy
- Product
- Yielder
- _Each
Errno
- E2BIG
- EACCES
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- EDOOFUS
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- EL2HLT
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- EL3HLT
- EL3RST
- ELAST
- ELIBACC
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- ELIBMAX
- ELIBSCN
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- ELOOP
- EMEDIUMTYPE
- EMFILE
- EMLINK
- EMSGSIZE
- EMULTIHOP
- ENAMETOOLONG
- ENAVAIL
- ENEEDAUTH
- ENETDOWN
- ENETRESET
- ENETUNREACH
- ENFILE
- ENOANO
- ENOATTR
- ENOBUFS
- ENOCSI
- ENODATA
- ENODEV
- ENOENT
- ENOEXEC
- ENOKEY
- ENOLCK
- ENOLINK
- ENOMEDIUM
- ENOMEM
- ENOMSG
- ENONET
- ENOPKG
- ENOPOLICY
- ENOPROTOOPT
- ENOSPC
- ENOSR
- ENOSTR
- ENOSYS
- ENOTBLK
- ENOTCAPABLE
- ENOTCONN
- ENOTDIR
- ENOTEMPTY
- ENOTNAM
- ENOTRECOVERABLE
- ENOTSOCK
- ENOTSUP
- ENOTTY
- ENOTUNIQ
- ENXIO
- EOPNOTSUPP
- EOVERFLOW
- EOWNERDEAD
- EPERM
- EPFNOSUPPORT
- EPIPE
- EPROCLIM
- EPROCUNAVAIL
- EPROGMISMATCH
- EPROGUNAVAIL
- EPROTO
- EPROTONOSUPPORT
- EPROTOTYPE
- EPWROFF
- EQFULL
- ERANGE
- EREMCHG
- EREMOTE
- EREMOTEIO
- ERESTART
- ERFKILL
- EROFS
- ERPCMISMATCH
- ESHLIBVERS
- ESHUTDOWN
- ESOCKTNOSUPPORT
- ESPIPE
- ESRCH
- ESRMNT
- ESTALE
- ESTRPIPE
- ETIME
- ETIMEDOUT
- ETOOMANYREFS
- ETXTBSY
- EUCLEAN
- EUNATCH
- EUSERS
- EWOULDBLOCK
- EXDEV
- EXFULL
- NOERROR
Etc
- Group
- Passwd
Exception
FalseClass
Fiber
- Annotation
- FixBorkedKeys
- Local
- Storage
FiberError
File
- Constants
- Stat
FileTest
FileUtils
Find
Float
FloatDomainError
Forwardable
FrozenError
GC
- Profiler
  - _Reporter
Gem
- BasicSpecification
- ConfigFile
- Dependency
- DependencyInstaller
- Installer
- LoadError
- MissingSpecError
- PathSupport
- Platform
- RequestSet
  - GemDependencyAPI
- Requirement
  - BadRequirementError
- SourceList
- Specification
- StreamUI
- Uninstaller
- Version
- _HashLike
Hash
- _Key
IO
- Buffer
  - AccessError
  - AllocationError
  - InvalidatedError
  - LockedError
  - MaskError
- ConsoleMode
- EAGAINWaitReadable
- EAGAINWaitWritable
- EINPROGRESSWaitReadable
- EINPROGRESSWaitWritable
- TimeoutError
- WaitReadable
- WaitWritable
- _ForFd
IOError
IPAddr
- AddressFamilyError
- Error
- InvalidAddressError
- InvalidPrefixError
IPSocket
IndexError
Integer
Interrupt
JSON
- Coder
- Ext
  - Generator
    State
  - Parser
    Config
  - ParserConfig
- GeneratorError
- GeneratorMethods
- GenericObject
- JSONError
- NestingError
- ParserError
- Pure
  - Generator
    State
  - Parser
- ResumableParser
- State
- TruffleRuby
  - Generator
    GeneratorMethods
    Array
    FalseClass
    Float
    Hash
    Integer
    NilClass
    Object
    String
    Symbol
    TrueClass
    State
- _Read
- _ReadableIO
- _WritableIO
- _Write
Jacobian
Kconv
Kernel
- _RationalDiv
- _Tracer
KeyError
LUSolve
LoadError
LocalJumpError
Logger
- Formatter
- LogDevice
- Period
- Severity
- _Formatter
- _WriteCloser
Logger
- Formatter
- LogDevice
- Period
- Severity
- _Formatter
- _WriteCloser
Marshal
- _Proc
- _Source
MatchData
Math
- DomainError
Method
Minitest
- AbstractReporter
- Assertion
- Assertions
- BacktraceFilter
- BenchSpec
- Benchmark
- Bisect
- CompositeReporter
- Compress
- ErrorOnWarning
- Expectation
- Expectations
- Guard
- Mock
- Parallel
  - Executor
  - Test
- PathExpander
- PrideIO
- PrideLOL
- ProgressReporter
- Reportable
- Reporter
- Result
- Runnable
- Skip
- Spec
  - DSL
    InstanceMethods
- Sprint
  - RakeReporter
  - SprintReporter
- StatisticsReporter
- SummaryReporter
- Test
  - LifecycleHooks
- TestTask
- UnexpectedError
- UnexpectedWarning
- Unit
  - TestCase
- VendoredPathExpander
MinitestGlobalExpectations
Module
Monitor
MonitorMixin
- ConditionVariable
Mutex_m
NKF
NameError
Net
- HTTP
  - Copy
  - Delete
  - Get
  - Head
  - Lock
  - Mkcol
  - Move
  - Options
  - Patch
  - Post
  - Propfind
  - Proppatch
  - Put
  - Trace
  - Unlock
- HTTPAccepted
- HTTPAlreadyReported
- HTTPBadGateway
- HTTPBadRequest
- HTTPBadResponse
- HTTPClientError
- HTTPConflict
- HTTPContinue
- HTTPCreated
- HTTPEarlyHints
- HTTPError
- HTTPExceptions
- HTTPExpectationFailed
- HTTPFailedDependency
- HTTPFatalError
- HTTPForbidden
- HTTPFound
- HTTPGatewayTimeout
- HTTPGenericRequest
- HTTPGone
- HTTPHeader
- HTTPHeaderSyntaxError
- HTTPIMUsed
- HTTPInformation
- HTTPInsufficientStorage
- HTTPInternalServerError
- HTTPLengthRequired
- HTTPLocked
- HTTPLoopDetected
- HTTPMethodNotAllowed
- HTTPMisdirectedRequest
- HTTPMovedPermanently
- HTTPMultiStatus
- HTTPMultipleChoices
- HTTPNetworkAuthenticationRequired
- HTTPNoContent
- HTTPNonAuthoritativeInformation
- HTTPNotAcceptable
- HTTPNotExtended
- HTTPNotFound
- HTTPNotImplemented
- HTTPNotModified
- HTTPOK
- HTTPPartialContent
- HTTPPayloadTooLarge
- HTTPPaymentRequired
- HTTPPermanentRedirect
- HTTPPreconditionFailed
- HTTPPreconditionRequired
- HTTPProcessing
- HTTPProxyAuthenticationRequired
- HTTPRangeNotSatisfiable
- HTTPRedirection
- HTTPRequest
- HTTPRequestHeaderFieldsTooLarge
- HTTPRequestTimeout
- HTTPResetContent
- HTTPResponse
  - _Dest
- HTTPRetriableError
- HTTPSeeOther
- HTTPServerError
- HTTPServerException
- HTTPServiceUnavailable
- HTTPSuccess
- HTTPSwitchProtocol
- HTTPTemporaryRedirect
- HTTPTooManyRequests
- HTTPURITooLong
- HTTPUnauthorized
- HTTPUnavailableForLegalReasons
- HTTPUnknownResponse
- HTTPUnprocessableEntity
- HTTPUnsupportedMediaType
- HTTPUpgradeRequired
- HTTPUseProxy
- HTTPVariantAlsoNegotiates
- HTTPVersionNotSupported
- OpenTimeout
- ProtoAuthError
- ProtoCommandError
- ProtoFatalError
- ProtoRetriableError
- ProtoServerError
- ProtoSyntaxError
- ProtoUnknownError
- Protocol
- ProtocolError
- ReadTimeout
- Response
- SMTP
- SMTPAuthenticationError
- SMTPError
- SMTPFatalError
- SMTPServerBusy
- SMTPSyntaxError
- SMTPUnknownError
- SMTPUnsupportedCommand
- WriteTimeout
Newton
NilClass
NoMatchingPatternError
NoMatchingPatternKeyError
NoMemoryError
NoMethodError
NotImplementedError
Numeric
Object
ObjectSpace
- WeakKeyMap
Observable
Open3
OpenSSL
- ASN1
  - ASN1Data
  - ASN1Error
  - BMPString
  - BitString
  - Boolean
  - Constructive
  - EndOfContent
  - Enumerated
  - GeneralString
  - GeneralizedTime
  - GraphicString
  - IA5String
  - ISO64String
  - Integer
  - Null
  - NumericString
  - ObjectId
  - OctetString
  - Primitive
  - PrintableString
  - Sequence
  - Set
  - T61String
  - UTCTime
  - UTF8String
  - UniversalString
  - VideotexString
  - _ToDer
- BN
- BNError
- Buffering
  - Buffer
- Cipher
  - AES
  - AES128
  - AES192
  - AES256
  - BF
  - CAST5
  - Cipher
  - CipherError
  - DES
  - IDEA
  - RC2
  - RC4
  - RC5
- Config
- ConfigError
- Digest
  - Digest
  - DigestError
  - MD4
  - MD5
  - RIPEMD160
  - SHA1
  - SHA224
  - SHA256
  - SHA384
  - SHA512
- Engine
  - EngineError
- ExtConfig
- HMAC
- HMACError
- KDF
  - KDFError
- Marshal
  - ClassMethods
- Netscape
  - SPKI
  - SPKIError
- OCSP
  - BasicResponse
  - CertificateId
  - OCSPError
  - Request
  - Response
  - SingleResponse
- OpenSSLError
- PKCS12
  - PKCS12Error
- PKCS5
- PKCS7
  - PKCS7Error
  - RecipientInfo
  - SignerInfo
- PKey
  - DH
  - DHError
  - DSA
  - DSAError
  - EC
    Group
    Error
    Point
    Error
  - ECError
  - PKey
  - PKeyError
  - RSA
  - RSAError
- Random
  - RandomError
- SSL
  - SSLContext
  - SSLError
  - SSLErrorWaitReadable
  - SSLErrorWaitWritable
  - SSLServer
  - SSLSocket
  - Session
    SessionError
  - SocketForwarder
- Timestamp
  - Factory
  - Request
  - Response
  - TimestampError
  - TokenInfo
- X509
  - Attribute
  - AttributeError
  - CRL
  - CRLError
  - Certificate
  - CertificateError
  - Extension
    AuthorityInfoAccess
    AuthorityKeyIdentifier
    CRLDistributionPoints
    Helpers
    SubjectKeyIdentifier
  - ExtensionError
  - ExtensionFactory
  - Name
    RFC2253DN
  - NameError
  - Request
  - RequestError
  - Revoked
  - RevokedError
  - Store
  - StoreContext
  - StoreError
OpenStruct
OpenURI
- HTTPError
- HTTPRedirect
- Meta
- OpenRead
- TooManyRedirects
OptionParser
- Acceptables
- AmbiguousArgument
- AmbiguousOption
- Arguable
- CompletingHash
- Completion
- InvalidArgument
- InvalidOption
- List
- MissingArgument
- NeedlessArgument
- OptionMap
- ParseError
- Switch
  - NoArgument
  - OptionalArgument
  - PlacedArgument
  - RequiredArgument
- _Intoable
- _LtLtString
- _Pattern
PP
- ObjectMixin
- PPMethods
- SingleLine
- _LeftShift
- _PPMethodsRequired
- _PrettyPrint
PStore
PTY
Pathname
PrettyPrint
- Breakable
- Group
- GroupQueue
- SingleLine
- Text
- _Output
Prism
- ASCIISource
- AliasGlobalVariableNode
- AliasMethodNode
- AlternationPatternNode
- AndNode
- ArgumentsNode
- ArgumentsNodeFlags
- ArrayNode
- ArrayNodeFlags
- ArrayPatternNode
- AssocNode
- AssocSplatNode
- BackReferenceReadNode
- BasicVisitor
- BeginNode
- BlockArgumentNode
- BlockLocalVariableNode
- BlockNode
- BlockParameterNode
- BlockParametersNode
- BreakNode
- CallAndWriteNode
- CallNode
- CallNodeFlags
- CallOperatorWriteNode
- CallOrWriteNode
- CallTargetNode
- CapturePatternNode
- CaseMatchNode
- CaseNode
- ClassNode
- ClassVariableAndWriteNode
- ClassVariableOperatorWriteNode
- ClassVariableOrWriteNode
- ClassVariableReadNode
- ClassVariableTargetNode
- ClassVariableWriteNode
- CodeUnitsCache
- Comment
- Compiler
- ConstantAndWriteNode
- ConstantOperatorWriteNode
- ConstantOrWriteNode
- ConstantPathAndWriteNode
- ConstantPathNode
  - DynamicPartsInConstantPathError
  - MissingNodesInConstantPathError
- ConstantPathOperatorWriteNode
- ConstantPathOrWriteNode
- ConstantPathTargetNode
- ConstantPathWriteNode
- ConstantReadNode
- ConstantTargetNode
- ConstantWriteNode
- CurrentVersionError
- DSL
- DefNode
- DefinedNode
- DesugarCompiler
- Dispatcher
  - DispatchOnce
- DotVisitor
- ElseNode
- EmbDocComment
- EmbeddedStatementsNode
- EmbeddedVariableNode
- EncodingFlags
- EnsureNode
- FalseNode
- FindPatternNode
- FlipFlopNode
- FloatNode
- ForNode
- ForwardingArgumentsNode
- ForwardingParameterNode
- ForwardingSuperNode
- GlobalVariableAndWriteNode
- GlobalVariableOperatorWriteNode
- GlobalVariableOrWriteNode
- GlobalVariableReadNode
- GlobalVariableTargetNode
- GlobalVariableWriteNode
- HashNode
- HashPatternNode
- IfNode
- ImaginaryNode
- ImplicitNode
- ImplicitRestNode
- InNode
- IndexAndWriteNode
- IndexOperatorWriteNode
- IndexOrWriteNode
- IndexTargetNode
- InlineComment
- InspectVisitor
  - Replace
- InstanceVariableAndWriteNode
- InstanceVariableOperatorWriteNode
- InstanceVariableOrWriteNode
- InstanceVariableReadNode
- InstanceVariableTargetNode
- InstanceVariableWriteNode
- IntegerBaseFlags
- IntegerNode
- InterpolatedMatchLastLineNode
- InterpolatedRegularExpressionNode
- InterpolatedStringNode
- InterpolatedStringNodeFlags
- InterpolatedSymbolNode
- InterpolatedXStringNode
- ItLocalVariableReadNode
- ItParametersNode
- KeywordHashNode
- KeywordHashNodeFlags
- KeywordRestParameterNode
- LambdaNode
- LexCompat
  - IgnoreStateToken
  - Result
  - Token
- LexResult
- LocalVariableAndWriteNode
- LocalVariableOperatorWriteNode
- LocalVariableOrWriteNode
- LocalVariableReadNode
- LocalVariableTargetNode
- LocalVariableWriteNode
- Location
- LoopFlags
- MagicComment
- MatchLastLineNode
- MatchPredicateNode
- MatchRequiredNode
- MatchWriteNode
- MissingNode
- ModuleNode
- MultiTargetNode
- MultiWriteNode
- MutationCompiler
- NextNode
- NilNode
- NoKeywordsParameterNode
- Node
- NodeFlags
- NumberedParametersNode
- NumberedReferenceReadNode
- OptionalKeywordParameterNode
- OptionalParameterNode
- OrNode
- Pack
  - Directive
  - Format
- ParameterFlags
- ParametersNode
- ParenthesesNode
- ParenthesesNodeFlags
- ParseError
- ParseLexResult
- ParseResult
  - Comments
    LocationTarget
    NodeTarget
    _Target
  - Errors
  - Newlines
- ParseWarning
- Pattern
  - CompilationError
- PinnedExpressionNode
- PinnedVariableNode
- PostExecutionNode
- PreExecutionNode
- ProgramNode
- RangeFlags
- RangeNode
- RationalNode
- RedoNode
- Reflection
  - ConstantField
  - ConstantListField
  - Field
  - FlagsField
  - FloatField
  - IntegerField
  - LocationField
  - NodeField
  - NodeListField
  - OptionalConstantField
  - OptionalLocationField
  - OptionalNodeField
  - StringField
- RegularExpressionFlags
- RegularExpressionNode
- Relocation
  - CharacterColumnsField
  - CharacterOffsetsField
  - CodeUnitColumnsField
  - CodeUnitOffsetsField
  - ColumnsField
  - CommentsField
    Comment
  - Entry
    MissingValueError
  - FilepathField
  - LeadingCommentsField
  - LinesField
  - OffsetsField
  - Repository
    ConfigurationError
  - Source
  - SourceFilepath
  - SourceString
  - TrailingCommentsField
  - _Field
  - _Value
- RequiredKeywordParameterNode
- RequiredParameterNode
- RescueModifierNode
- RescueNode
- RestParameterNode
- Result
- RetryNode
- ReturnNode
- Scope
- SelfNode
- Serialize
- ShareableConstantNode
- ShareableConstantNodeFlags
- SingletonClassNode
- Source
- SourceEncodingNode
- SourceFileNode
- SourceLineNode
- SplatNode
- StatementsNode
- StringFlags
- StringNode
- StringQuery
- SuperNode
- SymbolFlags
- SymbolNode
- Token
- Translation
  - Parser
    Builder
    Compiler
    CompilationError
    Lexer
    PrismDiagnostic
  - Parser33
  - Parser34
  - Parser40
  - Parser41
  - ParserCurrent
  - Ripper
    SexpBuilder
    SexpBuilderPP
  - RubyParser
    Compiler
- TrueNode
- UndefNode
- UnlessNode
- UntilNode
- Visitor
- WhenNode
- WhileNode
- XStringNode
- YieldNode
- _CodeUnitsCache
- _Comment
- _Node
- _Repository
- _Stream
- _Visitor
Proc
- _Callable
Process
- GID
- Status
- Sys
- Tms
- UID
- Waiter
Psych
- BadAlias
- DBM
- DisallowedClass
- Exception
- Store
- SyntaxError
RBS
- AST
  - Annotation
  - Comment
  - Declarations
    AliasDecl
    Base
    Class
    Super
    ClassAlias
    Constant
    Global
    Interface
    MixinHelper
    Module
    Self
    ModuleAlias
    NestedDeclarationHelper
    TypeAlias
    _WithMember
  - Directives
    Base
    ResolveTypeNames
    Use
    SingleClause
    WildcardClause
  - Members
    Alias
    AttrAccessor
    AttrReader
    AttrWriter
    Attribute
    Base
    ClassInstanceVariable
    ClassVariable
    Extend
    Include
    InstanceVariable
    LocationOnly
    MethodDefinition
    Overload
    Mixin
    Prepend
    Private
    Public
    Var
  - Ruby
    Annotations
    AliasAnnotation
    Base
    BlockParamTypeAnnotation
    ClassAliasAnnotation
    ColonMethodTypeAnnotation
    DoubleSplatParamTypeAnnotation
    InstanceVariableAnnotation
    MethodTypesAnnotation
    Overload
    ModuleAliasAnnotation
    NodeTypeAssertion
    ParamTypeAnnotation
    ReturnTypeAnnotation
    SkipAnnotation
    SplatParamTypeAnnotation
    TypeApplicationAnnotation
    CommentBlock
    AnnotationSyntaxError
    Declarations
    Base
    ClassDecl
    SuperClass
    ClassModuleAliasDecl
    ConstantDecl
    ModuleDecl
    Helpers
    ConstantHelper
    LocationHelper
    _WithBuffer
    Members
    AttrAccessorMember
    AttrReaderMember
    AttrWriterMember
    AttributeMember
    Base
    DefMember
    Overload
    ExtendMember
    IncludeMember
    InstanceVariableMember
    MethodTypeAnnotation
    DocStyle
    MixinMember
    PrependMember
  - TypeParam
  - Visitor
- AncestorGraph
  - InstanceNode
  - SingletonNode
- Annotate
  - Annotations
    Copy
    Skip
    Source
  - Formatter
  - RDocAnnotator
    _Annotated
    _Commented
    _PathTester
    _WithRDocComment
  - RDocSource
- BaseError
- Buffer
- BuiltinNames
  - Name
- CLI
  - ColoredIO
  - Diff
  - LibraryOptions
  - Validate
    Errors
  - _IO
- ClassInstanceVariableDuplicationError
- Collection
  - Cleaner
  - Config
    CollectionNotAvailable
    Lockfile
    LockfileGenerator
    GemfileLockMismatchError
  - Installer
  - Sources
    Base
    Git
    CommandError
    Local
    Rubygems
    Stdlib
    _Source
- Constant
- CyclicClassAliasDefinitionError
- CyclicTypeParameterBound
- Definition
  - Ancestor
    Instance
    Singleton
  - InstanceAncestors
  - Method
    TypeDef
  - SingletonAncestors
  - Variable
- DefinitionBuilder
  - AncestorBuilder
    OneAncestors
  - MethodBuilder
    Methods
    Definition
    Sorter
- DefinitionError
- DetailedMessageable
- Diff
- DuplicatedDeclarationError
- DuplicatedInterfaceMethodDefinitionError
- DuplicatedMethodDefinitionError
- Environment
  - ClassAliasEntry
  - ClassEntry
  - ConstantEntry
  - GlobalEntry
  - InterfaceEntry
  - ModuleAliasEntry
  - ModuleEntry
  - SingleEntry
  - TypeAliasEntry
  - UseMap
    Table
- EnvironmentLoader
  - Library
  - UnknownLibraryError
- EnvironmentWalker
  - InstanceNode
  - SingletonNode
  - TypeNameNode
- Factory
- FileFinder
- GenericParameterMismatchError
- InconsistentClassModuleAliasError
- InheritModuleError
- InlineParser
- InstanceVariableDuplicationError
- InvalidOverloadMethodError
- InvalidTypeApplicationError
- InvalidVarianceAnnotationError
- LoadingError
- Location
- Locator
- MethodNameHelper
- MethodType
- MixinClassError
- Namespace
- NoMixinFoundError
- NoSelfTypeFoundError
- NoSuperclassFoundError
- NoTypeFoundError
- NonregularTypeAliasError
- Parser
  - LexResult
  - LocatedValue
  - Token
- ParsingError
- Prototype
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_Each
_EachEntry
_Exception
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_LoadPathAPI
_Rand
_Range
_Reader
_ReaderPartial
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_ToH
_ToHash
_ToI
_ToIO
_ToInt
_ToJson
_ToPath
_ToProc
_ToR
_ToS
_ToStr
_ToSym
_Writer

CGI::
InvalidEncoding

class CGI::InvalidEncoding

Exception raised when there is an invalid encoding detected