<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <!--Rendered using the Haskell Html Library v0.2--> <HTML ><HEAD ><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8" ><TITLE >Language.Haskell.Extension</TITLE ><LINK HREF="haddock.css" REL="stylesheet" TYPE="text/css" ><SCRIPT SRC="haddock-util.js" TYPE="text/javascript" ></SCRIPT ><SCRIPT TYPE="text/javascript" >window.onload = function () {setSynopsis("mini_Language-Haskell-Extension.html")};</SCRIPT ></HEAD ><BODY ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="topbar" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD ><IMG SRC="haskell_icon.gif" WIDTH="16" HEIGHT="16" ALT=" " ></TD ><TD CLASS="title" >Cabal-1.6.0.3: A framework for packaging Haskell software</TD ><TD CLASS="topbut" ><A HREF="index.html" >Contents</A ></TD ><TD CLASS="topbut" ><A HREF="doc-index.html" >Index</A ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="modulebar" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD ><FONT SIZE="6" >Language.Haskell.Extension</FONT ></TD ><TD ALIGN="right" ><TABLE CLASS="narrow" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="infohead" >Portability</TD ><TD CLASS="infoval" >portable</TD ></TR ><TR ><TD CLASS="infohead" >Maintainer</TD ><TD CLASS="infoval" >libraries@haskell.org</TD ></TR ></TABLE ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="section1" >Description</TD ></TR ><TR ><TD CLASS="doc" >Haskell language extensions </TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="section1" >Synopsis</TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="body" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="decl" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="decl" ><SPAN CLASS="keyword" >data</SPAN > <A HREF="#t%3AExtension" >Extension</A > </TD ></TR ><TR ><TD CLASS="body" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="decl" >= <A HREF="#v%3AOverlappingInstances" >OverlappingInstances</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AUndecidableInstances" >UndecidableInstances</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AIncoherentInstances" >IncoherentInstances</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ARecursiveDo" >RecursiveDo</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AParallelListComp" >ParallelListComp</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AMultiParamTypeClasses" >MultiParamTypeClasses</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ANoMonomorphismRestriction" >NoMonomorphismRestriction</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AFunctionalDependencies" >FunctionalDependencies</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ARank2Types" >Rank2Types</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ARankNTypes" >RankNTypes</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3APolymorphicComponents" >PolymorphicComponents</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AExistentialQuantification" >ExistentialQuantification</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AScopedTypeVariables" >ScopedTypeVariables</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AImplicitParams" >ImplicitParams</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AFlexibleContexts" >FlexibleContexts</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AFlexibleInstances" >FlexibleInstances</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AEmptyDataDecls" >EmptyDataDecls</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ACPP" >CPP</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AKindSignatures" >KindSignatures</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ABangPatterns" >BangPatterns</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ATypeSynonymInstances" >TypeSynonymInstances</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ATemplateHaskell" >TemplateHaskell</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AForeignFunctionInterface" >ForeignFunctionInterface</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AArrows" >Arrows</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AGenerics" >Generics</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ANoImplicitPrelude" >NoImplicitPrelude</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ANamedFieldPuns" >NamedFieldPuns</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3APatternGuards" >PatternGuards</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AGeneralizedNewtypeDeriving" >GeneralizedNewtypeDeriving</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AExtensibleRecords" >ExtensibleRecords</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ARestrictedTypeSynonyms" >RestrictedTypeSynonyms</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AHereDocuments" >HereDocuments</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AMagicHash" >MagicHash</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ATypeFamilies" >TypeFamilies</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AStandaloneDeriving" >StandaloneDeriving</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AUnicodeSyntax" >UnicodeSyntax</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3APatternSignatures" >PatternSignatures</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AUnliftedFFITypes" >UnliftedFFITypes</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ALiberalTypeSynonyms" >LiberalTypeSynonyms</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ATypeOperators" >TypeOperators</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ARecordWildCards" >RecordWildCards</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ARecordPuns" >RecordPuns</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ADisambiguateRecordFields" >DisambiguateRecordFields</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AOverloadedStrings" >OverloadedStrings</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AGADTs" >GADTs</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ANoMonoPatBinds" >NoMonoPatBinds</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ARelaxedPolyRec" >RelaxedPolyRec</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AExtendedDefaultRules" >ExtendedDefaultRules</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AUnboxedTuples" >UnboxedTuples</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ADeriveDataTypeable" >DeriveDataTypeable</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AConstrainedClassMethods" >ConstrainedClassMethods</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3APackageImports" >PackageImports</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AImpredicativeTypes" >ImpredicativeTypes</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ANewQualifiedOperators" >NewQualifiedOperators</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3APostfixOperators" >PostfixOperators</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AQuasiQuotes" >QuasiQuotes</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3ATransformListComp" >TransformListComp</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AViewPatterns" >ViewPatterns</A ></TD ></TR ><TR ><TD CLASS="decl" >| <A HREF="#v%3AUnknownExtension" >UnknownExtension</A > <A HREF="../base/Data-Char.html#t%3AString" >String</A ></TD ></TR ></TABLE ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3AknownExtensions" >knownExtensions</A > :: [<A HREF="Language-Haskell-Extension.html#t%3AExtension" >Extension</A >]</TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="section1" >Documentation</TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><SPAN CLASS="keyword" >data</SPAN > <A NAME="t:Extension" ><A NAME="t%3AExtension" ></A ></A ><B >Extension</B > </TD ></TR ><TR ><TD CLASS="body" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="ndoc" >This represents language extensions beyond Haskell 98 that are supported by some implementations, usually in some special mode. </TD ></TR ><TR ><TD CLASS="section4" >Constructors</TD ></TR ><TR ><TD CLASS="body" ><TABLE CLASS="vanilla" CELLSPACING="1" CELLPADDING="0" ><TR ><TD CLASS="arg" ><A NAME="v:OverlappingInstances" ><A NAME="v%3AOverlappingInstances" ></A ></A ><B >OverlappingInstances</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:UndecidableInstances" ><A NAME="v%3AUndecidableInstances" ></A ></A ><B >UndecidableInstances</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:IncoherentInstances" ><A NAME="v%3AIncoherentInstances" ></A ></A ><B >IncoherentInstances</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:RecursiveDo" ><A NAME="v%3ARecursiveDo" ></A ></A ><B >RecursiveDo</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:ParallelListComp" ><A NAME="v%3AParallelListComp" ></A ></A ><B >ParallelListComp</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:MultiParamTypeClasses" ><A NAME="v%3AMultiParamTypeClasses" ></A ></A ><B >MultiParamTypeClasses</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:NoMonomorphismRestriction" ><A NAME="v%3ANoMonomorphismRestriction" ></A ></A ><B >NoMonomorphismRestriction</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:FunctionalDependencies" ><A NAME="v%3AFunctionalDependencies" ></A ></A ><B >FunctionalDependencies</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:Rank2Types" ><A NAME="v%3ARank2Types" ></A ></A ><B >Rank2Types</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:RankNTypes" ><A NAME="v%3ARankNTypes" ></A ></A ><B >RankNTypes</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:PolymorphicComponents" ><A NAME="v%3APolymorphicComponents" ></A ></A ><B >PolymorphicComponents</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:ExistentialQuantification" ><A NAME="v%3AExistentialQuantification" ></A ></A ><B >ExistentialQuantification</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:ScopedTypeVariables" ><A NAME="v%3AScopedTypeVariables" ></A ></A ><B >ScopedTypeVariables</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:ImplicitParams" ><A NAME="v%3AImplicitParams" ></A ></A ><B >ImplicitParams</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:FlexibleContexts" ><A NAME="v%3AFlexibleContexts" ></A ></A ><B >FlexibleContexts</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:FlexibleInstances" ><A NAME="v%3AFlexibleInstances" ></A ></A ><B >FlexibleInstances</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:EmptyDataDecls" ><A NAME="v%3AEmptyDataDecls" ></A ></A ><B >EmptyDataDecls</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:CPP" ><A NAME="v%3ACPP" ></A ></A ><B >CPP</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:KindSignatures" ><A NAME="v%3AKindSignatures" ></A ></A ><B >KindSignatures</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:BangPatterns" ><A NAME="v%3ABangPatterns" ></A ></A ><B >BangPatterns</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:TypeSynonymInstances" ><A NAME="v%3ATypeSynonymInstances" ></A ></A ><B >TypeSynonymInstances</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:TemplateHaskell" ><A NAME="v%3ATemplateHaskell" ></A ></A ><B >TemplateHaskell</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:ForeignFunctionInterface" ><A NAME="v%3AForeignFunctionInterface" ></A ></A ><B >ForeignFunctionInterface</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:Arrows" ><A NAME="v%3AArrows" ></A ></A ><B >Arrows</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:Generics" ><A NAME="v%3AGenerics" ></A ></A ><B >Generics</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:NoImplicitPrelude" ><A NAME="v%3ANoImplicitPrelude" ></A ></A ><B >NoImplicitPrelude</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:NamedFieldPuns" ><A NAME="v%3ANamedFieldPuns" ></A ></A ><B >NamedFieldPuns</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:PatternGuards" ><A NAME="v%3APatternGuards" ></A ></A ><B >PatternGuards</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:GeneralizedNewtypeDeriving" ><A NAME="v%3AGeneralizedNewtypeDeriving" ></A ></A ><B >GeneralizedNewtypeDeriving</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:ExtensibleRecords" ><A NAME="v%3AExtensibleRecords" ></A ></A ><B >ExtensibleRecords</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:RestrictedTypeSynonyms" ><A NAME="v%3ARestrictedTypeSynonyms" ></A ></A ><B >RestrictedTypeSynonyms</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:HereDocuments" ><A NAME="v%3AHereDocuments" ></A ></A ><B >HereDocuments</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:MagicHash" ><A NAME="v%3AMagicHash" ></A ></A ><B >MagicHash</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:TypeFamilies" ><A NAME="v%3ATypeFamilies" ></A ></A ><B >TypeFamilies</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:StandaloneDeriving" ><A NAME="v%3AStandaloneDeriving" ></A ></A ><B >StandaloneDeriving</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:UnicodeSyntax" ><A NAME="v%3AUnicodeSyntax" ></A ></A ><B >UnicodeSyntax</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:PatternSignatures" ><A NAME="v%3APatternSignatures" ></A ></A ><B >PatternSignatures</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:UnliftedFFITypes" ><A NAME="v%3AUnliftedFFITypes" ></A ></A ><B >UnliftedFFITypes</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:LiberalTypeSynonyms" ><A NAME="v%3ALiberalTypeSynonyms" ></A ></A ><B >LiberalTypeSynonyms</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:TypeOperators" ><A NAME="v%3ATypeOperators" ></A ></A ><B >TypeOperators</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:RecordWildCards" ><A NAME="v%3ARecordWildCards" ></A ></A ><B >RecordWildCards</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:RecordPuns" ><A NAME="v%3ARecordPuns" ></A ></A ><B >RecordPuns</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:DisambiguateRecordFields" ><A NAME="v%3ADisambiguateRecordFields" ></A ></A ><B >DisambiguateRecordFields</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:OverloadedStrings" ><A NAME="v%3AOverloadedStrings" ></A ></A ><B >OverloadedStrings</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:GADTs" ><A NAME="v%3AGADTs" ></A ></A ><B >GADTs</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:NoMonoPatBinds" ><A NAME="v%3ANoMonoPatBinds" ></A ></A ><B >NoMonoPatBinds</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:RelaxedPolyRec" ><A NAME="v%3ARelaxedPolyRec" ></A ></A ><B >RelaxedPolyRec</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:ExtendedDefaultRules" ><A NAME="v%3AExtendedDefaultRules" ></A ></A ><B >ExtendedDefaultRules</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:UnboxedTuples" ><A NAME="v%3AUnboxedTuples" ></A ></A ><B >UnboxedTuples</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:DeriveDataTypeable" ><A NAME="v%3ADeriveDataTypeable" ></A ></A ><B >DeriveDataTypeable</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:ConstrainedClassMethods" ><A NAME="v%3AConstrainedClassMethods" ></A ></A ><B >ConstrainedClassMethods</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:PackageImports" ><A NAME="v%3APackageImports" ></A ></A ><B >PackageImports</B ></TD ><TD CLASS="rdoc" ><P >Allow imports to be qualified by the package name that the module is intended to be imported from, e.g. </P ><PRE > import "network" Network.Socket </PRE ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:ImpredicativeTypes" ><A NAME="v%3AImpredicativeTypes" ></A ></A ><B >ImpredicativeTypes</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:NewQualifiedOperators" ><A NAME="v%3ANewQualifiedOperators" ></A ></A ><B >NewQualifiedOperators</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:PostfixOperators" ><A NAME="v%3APostfixOperators" ></A ></A ><B >PostfixOperators</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:QuasiQuotes" ><A NAME="v%3AQuasiQuotes" ></A ></A ><B >QuasiQuotes</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:TransformListComp" ><A NAME="v%3ATransformListComp" ></A ></A ><B >TransformListComp</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:ViewPatterns" ><A NAME="v%3AViewPatterns" ></A ></A ><B >ViewPatterns</B ></TD ><TD CLASS="rdoc" ></TD ></TR ><TR ><TD CLASS="arg" ><A NAME="v:UnknownExtension" ><A NAME="v%3AUnknownExtension" ></A ></A ><B >UnknownExtension</B > <A HREF="../base/Data-Char.html#t%3AString" >String</A ></TD ><TD CLASS="rdoc" ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="section4" ><IMG SRC="minus.gif" CLASS="coll" ONCLICK="toggle(this,'i:Extension')" ALT="show/hide" > Instances</TD ></TR ><TR ><TD CLASS="body" ><DIV ID="i:Extension" STYLE="display:block;" ><TABLE CLASS="vanilla" CELLSPACING="1" CELLPADDING="0" ><TR ><TD CLASS="decl" ><A HREF="../base/Data-Eq.html#t%3AEq" >Eq</A > <A HREF="Language-Haskell-Extension.html#t%3AExtension" >Extension</A ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="../base/Text-Read.html#t%3ARead" >Read</A > <A HREF="Language-Haskell-Extension.html#t%3AExtension" >Extension</A ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="../base/Text-Show.html#t%3AShow" >Show</A > <A HREF="Language-Haskell-Extension.html#t%3AExtension" >Extension</A ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="Distribution-Text.html#t%3AText" >Text</A > <A HREF="Language-Haskell-Extension.html#t%3AExtension" >Extension</A ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:knownExtensions" ><A NAME="v%3AknownExtensions" ></A ></A ><B >knownExtensions</B > :: [<A HREF="Language-Haskell-Extension.html#t%3AExtension" >Extension</A >]</TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="botbar" >Produced by <A HREF="http://www.haskell.org/haddock/" >Haddock</A > version 2.4.2</TD ></TR ></TABLE ></BODY ></HTML >