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>Data.Enumerator.List</TITLE
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>enumerator-0.4.13.1: Reliable, high-performance processing with left-fold enumerators</TD
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><A HREF="src/Data-Enumerator-List.html"
>Source code</A
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><FONT SIZE="6"
>Data.Enumerator.List</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"
>jmillikin@gmail.com</TD
></TR
></TABLE
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
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><TR
><TD
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="section4"
><B
>Contents</B
></TD
></TR
><TR
><TD
><DL
><DT
><A HREF="#1"
>List analogues
</A
></DT
><DD
><DL
><DT
><A HREF="#2"
>Folds
</A
></DT
><DT
><A HREF="#3"
>Maps
</A
></DT
><DT
><A HREF="#4"
>Accumulating maps
</A
></DT
><DT
><A HREF="#5"
>Infinite streams
</A
></DT
><DT
><A HREF="#6"
>Bounded streams
</A
></DT
><DT
><A HREF="#7"
>Filters
</A
></DT
><DT
><A HREF="#8"
>Consumers
</A
></DT
><DT
><A HREF="#9"
>Unsorted
</A
></DT
></DL
></DD
></DL
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
>Description</TD
></TR
><TR
><TD CLASS="doc"
><P
>This module is intended to be imported qualified:
</P
><PRE
>
import qualified Data.Enumerator.List as EL
</PRE
><P
>Since: 0.4.5
</P
></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"
><A HREF="#v%3Afold"
>fold</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (b -> a -> b) -> b -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AfoldM"
>foldM</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (b -> a -> m b) -> b -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Amap"
>map</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (ao -> ai) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AmapM"
>mapM</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (ao -> m ai) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AmapM_"
>mapM_</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> m b) -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m <A HREF="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AconcatMap"
>concatMap</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (ao -> [ai]) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AconcatMapM"
>concatMapM</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (ao -> m [ai]) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AmapAccum"
>mapAccum</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (s -> ao -> (s, ai)) -> s -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AmapAccumM"
>mapAccumM</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (s -> ao -> m (s, ai)) -> s -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AconcatMapAccum"
>concatMapAccum</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (s -> ao -> (s, [ai])) -> s -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AconcatMapAccumM"
>concatMapAccumM</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (s -> ao -> m (s, [ai])) -> s -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Aiterate"
>iterate</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> a) -> a -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AiterateM"
>iterateM</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> m a) -> a -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Arepeat"
>repeat</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => a -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3ArepeatM"
>repeatM</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => m a -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Areplicate"
>replicate</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Prelude.html#t%3AInteger"
>Integer</A
> -> a -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AreplicateM"
>replicateM</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Prelude.html#t%3AInteger"
>Integer</A
> -> m a -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AgenerateM"
>generateM</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => m (<A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> a) -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Aunfold"
>unfold</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (s -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> (a, s)) -> s -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AunfoldM"
>unfoldM</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (s -> m (<A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> (a, s))) -> s -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Afilter"
>filter</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Bool.html#t%3ABool"
>Bool</A
>) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> a a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AfilterM"
>filterM</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> m <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Bool.html#t%3ABool"
>Bool</A
>) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> a a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Atake"
>take</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Prelude.html#t%3AInteger"
>Integer</A
> -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m [a]</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AtakeWhile"
>takeWhile</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Bool.html#t%3ABool"
>Bool</A
>) -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m [a]</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Aconsume"
>consume</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m [a]</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Ahead"
>head</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m (<A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> a)</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Adrop"
>drop</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Prelude.html#t%3AInteger"
>Integer</A
> -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m <A HREF="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AdropWhile"
>dropWhile</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Bool.html#t%3ABool"
>Bool</A
>) -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m <A HREF="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Arequire"
>require</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Prelude.html#t%3AInteger"
>Integer</A
> -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m <A HREF="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Aisolate"
>isolate</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Prelude.html#t%3AInteger"
>Integer</A
> -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> a a m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsplitWhen"
>splitWhen</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Bool.html#t%3ABool"
>Bool</A
>) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> a [a] m b</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Aunique"
>unique</A
> :: (<A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Ord.html#t%3AOrd"
>Ord</A
> a, <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m) => <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> a a m b</TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="1"
><A NAME="1"
>List analogues
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section2"
><A NAME="2"
><A NAME="2"
>Folds
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:fold"
><A NAME="v%3Afold"
></A
></A
><B
>fold</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (b -> a -> b) -> b -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#fold"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Consume the entire input stream with a strict left fold, one element
at a time.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:foldM"
><A NAME="v%3AfoldM"
></A
></A
><B
>foldM</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (b -> a -> m b) -> b -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#foldM"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Consume the entire input stream with a strict monadic left fold, one
element at a time.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section2"
><A NAME="3"
><A NAME="3"
>Maps
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:map"
><A NAME="v%3Amap"
></A
></A
><B
>map</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (ao -> ai) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#map"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3Amap"
>map</A
></TT
> f</TT
> applies <EM
>f</EM
> to each input element and feeds the
resulting outputs to the inner iteratee.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:mapM"
><A NAME="v%3AmapM"
></A
></A
><B
>mapM</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (ao -> m ai) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#mapM"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#v%3AmapM"
>mapM</A
></TT
> f</TT
> applies <EM
>f</EM
> to each input element and feeds the
resulting outputs to the inner iteratee.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:mapM_"
><A NAME="v%3AmapM_"
></A
></A
><B
>mapM_</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> m b) -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m <A HREF="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#mapM_"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#v%3AmapM_"
>mapM_</A
></TT
> f</TT
> applies <EM
>f</EM
> to each input element, and discards the results.
</P
><P
>Since: 0.4.11
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:concatMap"
><A NAME="v%3AconcatMap"
></A
></A
><B
>concatMap</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (ao -> [ai]) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#concatMap"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3AconcatMap"
>concatMap</A
></TT
> f</TT
> applies <EM
>f</EM
> to each input element and feeds the
resulting outputs to the inner iteratee.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:concatMapM"
><A NAME="v%3AconcatMapM"
></A
></A
><B
>concatMapM</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (ao -> m [ai]) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#concatMapM"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="Data-Enumerator-List.html#v%3AconcatMapM"
>concatMapM</A
></TT
> f</TT
> applies <EM
>f</EM
> to each input element and feeds the
resulting outputs to the inner iteratee.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section2"
><A NAME="4"
><A NAME="4"
>Accumulating maps
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:mapAccum"
><A NAME="v%3AmapAccum"
></A
></A
><B
>mapAccum</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (s -> ao -> (s, ai)) -> s -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#mapAccum"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Similar to <TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3Amap"
>map</A
></TT
>, but with a stateful step function.
</P
><P
>Since: 0.4.9
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:mapAccumM"
><A NAME="v%3AmapAccumM"
></A
></A
><B
>mapAccumM</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (s -> ao -> m (s, ai)) -> s -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#mapAccumM"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Similar to <TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#v%3AmapM"
>mapM</A
></TT
>, but with a stateful step function.
</P
><P
>Since: 0.4.9
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:concatMapAccum"
><A NAME="v%3AconcatMapAccum"
></A
></A
><B
>concatMapAccum</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (s -> ao -> (s, [ai])) -> s -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#concatMapAccum"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Similar to <TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3AconcatMap"
>concatMap</A
></TT
>, but with a stateful step function.
</P
><P
>Since: 0.4.11
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:concatMapAccumM"
><A NAME="v%3AconcatMapAccumM"
></A
></A
><B
>concatMapAccumM</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (s -> ao -> m (s, [ai])) -> s -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> ao ai m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#concatMapAccumM"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Similar to <TT
><A HREF="Data-Enumerator-List.html#v%3AconcatMapM"
>concatMapM</A
></TT
>, but with a stateful step function.
</P
><P
>Since: 0.4.11
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section2"
><A NAME="5"
><A NAME="5"
>Infinite streams
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:iterate"
><A NAME="v%3Aiterate"
></A
></A
><B
>iterate</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> a) -> a -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#iterate"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3Aiterate"
>iterate</A
></TT
> f x</TT
> enumerates an infinite stream of repeated applications
of <EM
>f</EM
> to <EM
>x</EM
>.
</P
><P
>Analogous to <TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3Aiterate"
>iterate</A
></TT
>.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:iterateM"
><A NAME="v%3AiterateM"
></A
></A
><B
>iterateM</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> m a) -> a -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#iterateM"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Similar to <TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3Aiterate"
>iterate</A
></TT
>, except the iteration function is monadic.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:repeat"
><A NAME="v%3Arepeat"
></A
></A
><B
>repeat</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => a -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#repeat"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Enumerates an infinite stream of a single element.
</P
><P
>Analogous to <TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3Arepeat"
>repeat</A
></TT
>.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:repeatM"
><A NAME="v%3ArepeatM"
></A
></A
><B
>repeatM</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => m a -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#repeatM"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Enumerates an infinite stream of element. Each element is computed by
the underlying monad.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section2"
><A NAME="6"
><A NAME="6"
>Bounded streams
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:replicate"
><A NAME="v%3Areplicate"
></A
></A
><B
>replicate</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Prelude.html#t%3AInteger"
>Integer</A
> -> a -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#replicate"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3Areplicate"
>replicate</A
></TT
> n x</TT
> enumerates a stream containing <EM
>n</EM
> copies of <EM
>x</EM
>.
</P
><P
>Analogous to <TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3Areplicate"
>replicate</A
></TT
>.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:replicateM"
><A NAME="v%3AreplicateM"
></A
></A
><B
>replicateM</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Prelude.html#t%3AInteger"
>Integer</A
> -> m a -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#replicateM"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="Data-Enumerator-List.html#v%3AreplicateM"
>replicateM</A
></TT
> n m_x</TT
> enumerates a stream of <EM
>n</EM
> elements, with each
element computed by <EM
>m_x</EM
>.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:generateM"
><A NAME="v%3AgenerateM"
></A
></A
><B
>generateM</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => m (<A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> a) -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#generateM"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Like <TT
><A HREF="Data-Enumerator-List.html#v%3ArepeatM"
>repeatM</A
></TT
>, except the computation may terminate the stream by
returning <TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Maybe.html#v%3ANothing"
>Nothing</A
></TT
>.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:unfold"
><A NAME="v%3Aunfold"
></A
></A
><B
>unfold</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (s -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> (a, s)) -> s -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#unfold"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Enumerates a stream of elements by repeatedly applying a function to
some state.
</P
><P
>Similar to <TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3Aiterate"
>iterate</A
></TT
>.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:unfoldM"
><A NAME="v%3AunfoldM"
></A
></A
><B
>unfoldM</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (s -> m (<A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> (a, s))) -> s -> <A HREF="Data-Enumerator.html#t%3AEnumerator"
>Enumerator</A
> a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#unfoldM"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Enumerates a stream of elements by repeatedly applying a computation to
some state.
</P
><P
>Similar to <TT
><A HREF="Data-Enumerator-List.html#v%3AiterateM"
>iterateM</A
></TT
>.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section2"
><A NAME="7"
><A NAME="7"
>Filters
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:filter"
><A NAME="v%3Afilter"
></A
></A
><B
>filter</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Bool.html#t%3ABool"
>Bool</A
>) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> a a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#filter"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Applies a predicate to the stream. The inner iteratee only receives
elements for which the predicate is <TT
>True</TT
>.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:filterM"
><A NAME="v%3AfilterM"
></A
></A
><B
>filterM</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> m <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Bool.html#t%3ABool"
>Bool</A
>) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> a a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#filterM"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Applies a monadic predicate to the stream. The inner iteratee only
receives elements for which the predicate returns <TT
>True</TT
>.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section2"
><A NAME="8"
><A NAME="8"
>Consumers
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:take"
><A NAME="v%3Atake"
></A
></A
><B
>take</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Prelude.html#t%3AInteger"
>Integer</A
> -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m [a]</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#take"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3Atake"
>take</A
></TT
> n</TT
> extracts the next <EM
>n</EM
> elements from the stream, as a list.
</P
><P
>Since: 0.4.5
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:takeWhile"
><A NAME="v%3AtakeWhile"
></A
></A
><B
>takeWhile</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Bool.html#t%3ABool"
>Bool</A
>) -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m [a]</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#takeWhile"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="Data-Enumerator-List.html#v%3AtakeWhile"
>takeWhile</A
></TT
> p</TT
> extracts input from the stream until the first element
which does not match the predicate.
</P
><P
>Since: 0.4.5
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:consume"
><A NAME="v%3Aconsume"
></A
></A
><B
>consume</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m [a]</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#consume"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><PRE
><TT
><A HREF="Data-Enumerator-List.html#v%3Aconsume"
>consume</A
></TT
> = <TT
><A HREF="Data-Enumerator-List.html#v%3AtakeWhile"
>takeWhile</A
></TT
> (const True)</PRE
><P
>Since: 0.4.5
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section2"
><A NAME="9"
><A NAME="9"
>Unsorted
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:head"
><A NAME="v%3Ahead"
></A
></A
><B
>head</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m (<A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> a)</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#head"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Get the next element from the stream, or <TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Maybe.html#v%3ANothing"
>Nothing</A
></TT
> if the stream has
ended.
</P
><P
>Since: 0.4.5
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:drop"
><A NAME="v%3Adrop"
></A
></A
><B
>drop</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Prelude.html#t%3AInteger"
>Integer</A
> -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m <A HREF="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#drop"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="Data-Enumerator-List.html#v%3Adrop"
>drop</A
></TT
> n</TT
> ignores <EM
>n</EM
> input elements from the stream.
</P
><P
>Since: 0.4.5
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:dropWhile"
><A NAME="v%3AdropWhile"
></A
></A
><B
>dropWhile</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Bool.html#t%3ABool"
>Bool</A
>) -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m <A HREF="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#dropWhile"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-List.html#v%3AdropWhile"
>dropWhile</A
></TT
> p</TT
> ignores input from the stream until the first element
which does not match the predicate.
</P
><P
>Since: 0.4.5
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:require"
><A NAME="v%3Arequire"
></A
></A
><B
>require</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Prelude.html#t%3AInteger"
>Integer</A
> -> <A HREF="Data-Enumerator.html#t%3AIteratee"
>Iteratee</A
> a m <A HREF="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#require"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="Data-Enumerator-List.html#v%3Arequire"
>require</A
></TT
> n</TT
> buffers input until at least <EM
>n</EM
> elements are available, or
throws an error if the stream ends early.
</P
><P
>Since: 0.4.5
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:isolate"
><A NAME="v%3Aisolate"
></A
></A
><B
>isolate</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Prelude.html#t%3AInteger"
>Integer</A
> -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> a a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#isolate"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
><TT
><TT
><A HREF="Data-Enumerator-List.html#v%3Aisolate"
>isolate</A
></TT
> n</TT
> reads at most <EM
>n</EM
> elements from the stream, and passes them
to its iteratee. If the iteratee finishes early, elements continue to be
consumed from the outer stream until <EM
>n</EM
> have been consumed.
</P
><P
>Since: 0.4.5
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:splitWhen"
><A NAME="v%3AsplitWhen"
></A
></A
><B
>splitWhen</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m => (a -> <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Bool.html#t%3ABool"
>Bool</A
>) -> <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> a [a] m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#splitWhen"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Split on elements satisfying a given predicate.
</P
><P
>Since: 0.4.8
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="topdecl"
><TABLE CLASS="declbar"
><TR
><TD CLASS="declname"
><A NAME="v:unique"
><A NAME="v%3Aunique"
></A
></A
><B
>unique</B
> :: (<A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Data-Ord.html#t%3AOrd"
>Ord</A
> a, <A HREF="/usr/share/doc/ghc/html/libraries/base-4.2.0.2/Control-Monad.html#t%3AMonad"
>Monad</A
> m) => <A HREF="Data-Enumerator.html#t%3AEnumeratee"
>Enumeratee</A
> a a m b</TD
><TD CLASS="declbut"
><A HREF="src/Data-Enumerator-List.html#unique"
>Source</A
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Remove duplicate elements from a stream, passing through the first
instance of each value.
</P
><P
>Similar to nub, but more efficient because it uses a <TT
><A HREF="/usr/share/doc/ghc/html/libraries/containers-0.3.0.0/Data-Set.html#t%3ASet"
>Set</A
></TT
>
internally.
</P
><P
>Since: 0.4.11
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="botbar"
>Produced by <A HREF="http://www.haskell.org/haddock/"
>Haddock</A
> version 2.6.1</TD
></TR
></TABLE
></BODY
></HTML
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