Sophie: ghc-ForSyDe-devel-3.1.1-4.fc14 i686

ghc-ForSyDe-devel-3.1.1-4.fc14.i686.rpm

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>Language.Haskell.TH.Lift</TITLE
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><TD CLASS="title"
>ForSyDe-3.1.1: ForSyDe's Haskell-embedded Domain Specific Language.</TD
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><A HREF="src/Language-Haskell-TH-Lift.html"
>Source code</A
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>Contents</A
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>Index</A
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>Language.Haskell.TH.Lift</FONT
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><TD CLASS="infohead"
>Portability</TD
><TD CLASS="infoval"
>portable</TD
></TR
><TR
><TD CLASS="infohead"
>Stability</TD
><TD CLASS="infoval"
>experimental</TD
></TR
><TR
><TD CLASS="infohead"
>Maintainer</TD
><TD CLASS="infoval"
>forsyde-dev@ict.kth.se</TD
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><TD CLASS="section1"
>Description</TD
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><TD CLASS="doc"
><P
>Automatically derive Template Haskell's <TT
><A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3ALift"
>Lift</A
></TT
> class for datatypes
 using Template Haskell splices.
</P
><P
>Based on Lynagh's th-lift package: <A HREF="http://hackage.haskell.org/cgi-bin/hackage-scripts/package/th-lift"
>http://hackage.haskell.org/cgi-bin/hackage-scripts/package/th-lift</A
>
</P
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><TD CLASS="section1"
>Synopsis</TD
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><TD CLASS="decl"
><A HREF="#v%3AderiveLift1"
>deriveLift1</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3AName"
>Name</A
> -&gt; <A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3AQ"
>Q</A
> [<A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3ADec"
>Dec</A
>]</TD
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><TD CLASS="decl"
><A HREF="#v%3AderiveLift"
>deriveLift</A
> :: <A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3AName"
>Name</A
> -&gt; <A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3AQ"
>Q</A
> <A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3ADec"
>Dec</A
></TD
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><TD CLASS="section1"
>Documentation</TD
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><A NAME="v:deriveLift1"
><A NAME="v%3AderiveLift1"
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><B
>deriveLift1</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3AName"
>Name</A
> -&gt; <A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3AQ"
>Q</A
> [<A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3ADec"
>Dec</A
>]</TD
><TD CLASS="declbut"
><A HREF="src/Language-Haskell-TH-Lift.html#deriveLift1"
>Source</A
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><P
>Automatically generate an instance of <TT
><A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3ALift"
>Lift</A
></TT
> for one data type. For example:
</P
><PRE
>{-# LANGUAGE TemplateHaskell #-}
module Colour where
import Language.Haskell.TH.Lift

data RGB = Red | Green | Blue

-- Generate the Lift instance of RGB
$(deriveLift1 ''RGB)
</PRE
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><TABLE CLASS="declbar"
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><TD CLASS="declname"
><A NAME="v:deriveLift"
><A NAME="v%3AderiveLift"
></A
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><B
>deriveLift</B
> :: <A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3AName"
>Name</A
> -&gt; <A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3AQ"
>Q</A
> <A HREF="/usr/share/doc/ghc/html/libraries/template-haskell-2.4.0.1/Language-Haskell-TH-Syntax.html#t%3ADec"
>Dec</A
></TD
><TD CLASS="declbut"
><A HREF="src/Language-Haskell-TH-Lift.html#deriveLift"
>Source</A
></TD
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><TD CLASS="doc"
><P
>Version of deriveLif1 used to automatically generate instances
   of Lift for multiple data types. For instance:
</P
><PRE
>{-# LANGUAGE TemplateHaskell #-}
module Colour where
import Language.Haskell.TH.Lift

data RGB = Red | Green | Blue

data Num a =&gt; Pixel a = Pixel a a a

-- Generate Lift instances for RGB and Pixel
$(mapM deriveLift [''RGB, ''Pixel])
</PRE
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