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>Data.STRef.Lazy</TITLE
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>base-4.1.0.0: Basic libraries</TD
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>Contents</A
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>Data.STRef.Lazy</FONT
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><TD CLASS="infohead"
>Portability</TD
><TD CLASS="infoval"
>non-portable (uses Control.Monad.ST.Lazy)</TD
></TR
><TR
><TD CLASS="infohead"
>Stability</TD
><TD CLASS="infoval"
>experimental</TD
></TR
><TR
><TD CLASS="infohead"
>Maintainer</TD
><TD CLASS="infoval"
>libraries@haskell.org</TD
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><TD CLASS="section4"
><B
>Contents</B
></TD
></TR
><TR
><TD
><DL
><DT
><A HREF="#1"
>STRefs
</A
></DT
></DL
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
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><TR
><TD CLASS="section1"
>Description</TD
></TR
><TR
><TD CLASS="doc"
>Mutable references in the lazy ST monad.
</TD
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><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
>Synopsis</TD
></TR
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></TD
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><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
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><TD CLASS="decl"
><SPAN CLASS="keyword"
>data</SPAN
> <A HREF="#t%3ASTRef"
>STRef</A
> s a</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AnewSTRef"
>newSTRef</A
> :: a -> <A HREF="Control-Monad-ST-Lazy.html#t%3AST"
>ST</A
> s (<A HREF="Data-STRef-Lazy.html#t%3ASTRef"
>STRef</A
> s a)</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AreadSTRef"
>readSTRef</A
> :: <A HREF="Data-STRef-Lazy.html#t%3ASTRef"
>STRef</A
> s a -> <A HREF="Control-Monad-ST-Lazy.html#t%3AST"
>ST</A
> s a</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AwriteSTRef"
>writeSTRef</A
> :: <A HREF="Data-STRef-Lazy.html#t%3ASTRef"
>STRef</A
> s a -> a -> <A HREF="Control-Monad-ST-Lazy.html#t%3AST"
>ST</A
> s <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AmodifySTRef"
>modifySTRef</A
> :: <A HREF="Data-STRef-Lazy.html#t%3ASTRef"
>STRef</A
> s a -> (a -> a) -> <A HREF="Control-Monad-ST-Lazy.html#t%3AST"
>ST</A
> s <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></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"
>STRefs
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>data</SPAN
> <A NAME="t:STRef"
><A NAME="t%3ASTRef"
></A
></A
><B
>STRef</B
> s a </TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="ndoc"
>a value of type <TT
>STRef s a</TT
> is a mutable variable in state thread <TT
>s</TT
>,
containing a value of type <TT
>a</TT
>
</TD
></TR
><TR
><TD CLASS="section4"
><IMG SRC="minus.gif" CLASS="coll" ONCLICK="toggle(this,'i:STRef')" ALT="show/hide"
> Instances</TD
></TR
><TR
><TD CLASS="body"
><DIV ID="i:STRef" STYLE="display:block;"
><TABLE CLASS="vanilla" CELLSPACING="1" CELLPADDING="0"
><TR
><TD CLASS="decl"
><A HREF="Data-Typeable.html#t%3ATypeable2"
>Typeable2</A
> <A HREF="Data-STRef-Lazy.html#t%3ASTRef"
>STRef</A
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="Data-Eq.html#t%3AEq"
>Eq</A
> (<A HREF="Data-STRef-Lazy.html#t%3ASTRef"
>STRef</A
> s a)</TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:newSTRef"
><A NAME="v%3AnewSTRef"
></A
></A
><B
>newSTRef</B
> :: a -> <A HREF="Control-Monad-ST-Lazy.html#t%3AST"
>ST</A
> s (<A HREF="Data-STRef-Lazy.html#t%3ASTRef"
>STRef</A
> s a)</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:readSTRef"
><A NAME="v%3AreadSTRef"
></A
></A
><B
>readSTRef</B
> :: <A HREF="Data-STRef-Lazy.html#t%3ASTRef"
>STRef</A
> s a -> <A HREF="Control-Monad-ST-Lazy.html#t%3AST"
>ST</A
> s a</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:writeSTRef"
><A NAME="v%3AwriteSTRef"
></A
></A
><B
>writeSTRef</B
> :: <A HREF="Data-STRef-Lazy.html#t%3ASTRef"
>STRef</A
> s a -> a -> <A HREF="Control-Monad-ST-Lazy.html#t%3AST"
>ST</A
> s <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:modifySTRef"
><A NAME="v%3AmodifySTRef"
></A
></A
><B
>modifySTRef</B
> :: <A HREF="Data-STRef-Lazy.html#t%3ASTRef"
>STRef</A
> s a -> (a -> a) -> <A HREF="Control-Monad-ST-Lazy.html#t%3AST"
>ST</A
> s <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
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></TD
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>Produced by <A HREF="http://www.haskell.org/haddock/"
>Haddock</A
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Mandriva
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2010.0
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i586
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media
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70ec89744a04da80369b4702b2c37256
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226
