Sophie: ghc-base-devel-4.2.0.2-8.6.fc14 x86

ghc-base-devel-4.2.0.2-8.6.fc14.x86_64.rpm

<!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
>GHC.Types</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_GHC-Types.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"
>ghc-prim-0.2.0.0: GHC primitives</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"
>GHC.Types</FONT
></TD
><TD ALIGN="right"
><TABLE CLASS="narrow" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="infohead"
>Portability</TD
><TD CLASS="infoval"
>non-portable (GHC Extensions)</TD
></TR
><TR
><TD CLASS="infohead"
>Stability</TD
><TD CLASS="infoval"
>internal</TD
></TR
><TR
><TD CLASS="infohead"
>Maintainer</TD
><TD CLASS="infoval"
>cvs-ghc@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"
>GHC type definitions.
 Use GHC.Exts from the base package instead of importing this
 module directly.
</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"
><SPAN CLASS="keyword"
>data</SPAN
>  <A HREF="#t%3AChar"
>Char</A
>  = <A HREF="#v%3AC%23"
>C#</A
> <A HREF="GHC-Prim.html#t%3AChar%23"
>Char#</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>data</SPAN
>  <A HREF="#t%3AInt"
>Int</A
>  = <A HREF="#v%3AI%23"
>I#</A
> <A HREF="GHC-Prim.html#t%3AInt%23"
>Int#</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>data</SPAN
>  <A HREF="#t%3AFloat"
>Float</A
>  = <A HREF="#v%3AF%23"
>F#</A
> <A HREF="GHC-Prim.html#t%3AFloat%23"
>Float#</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>data</SPAN
>  <A HREF="#t%3ADouble"
>Double</A
>  = <A HREF="#v%3AD%23"
>D#</A
> <A HREF="GHC-Prim.html#t%3ADouble%23"
>Double#</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>newtype</SPAN
>  <A HREF="#t%3AIO"
>IO</A
> a = <A HREF="#v%3AIO"
>IO</A
> (<A HREF="GHC-Prim.html#t%3AState%23"
>State#</A
> <A HREF="GHC-Prim.html#t%3ARealWorld"
>RealWorld</A
> -&gt; (#<A HREF="GHC-Prim.html#t%3AState%23"
>State#</A
> <A HREF="GHC-Prim.html#t%3ARealWorld"
>RealWorld</A
>, 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:Char"
><A NAME="t%3AChar"
></A
></A
><B
>Char</B
>  </TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><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:C#"
><A NAME="v%3AC%23"
></A
></A
><B
>C#</B
> <A HREF="GHC-Prim.html#t%3AChar%23"
>Char#</A
></TD
><TD CLASS="rdoc"
></TD
></TR
></TABLE
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>data</SPAN
>  <A NAME="t:Int"
><A NAME="t%3AInt"
></A
></A
><B
>Int</B
>  </TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="ndoc"
>A fixed-precision integer type with at least the range <TT
>[-2^29 .. 2^29-1]</TT
>.
 The exact range for a given implementation can be determined by using
 Prelude.minBound and Prelude.maxBound from the Prelude.Bounded class.
</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:I#"
><A NAME="v%3AI%23"
></A
></A
><B
>I#</B
> <A HREF="GHC-Prim.html#t%3AInt%23"
>Int#</A
></TD
><TD CLASS="rdoc"
></TD
></TR
></TABLE
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>data</SPAN
>  <A NAME="t:Float"
><A NAME="t%3AFloat"
></A
></A
><B
>Float</B
>  </TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="ndoc"
>Single-precision floating point numbers.
 It is desirable that this type be at least equal in range and precision
 to the IEEE single-precision type.
</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:F#"
><A NAME="v%3AF%23"
></A
></A
><B
>F#</B
> <A HREF="GHC-Prim.html#t%3AFloat%23"
>Float#</A
></TD
><TD CLASS="rdoc"
></TD
></TR
></TABLE
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>data</SPAN
>  <A NAME="t:Double"
><A NAME="t%3ADouble"
></A
></A
><B
>Double</B
>  </TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="ndoc"
>Double-precision floating point numbers.
 It is desirable that this type be at least equal in range and precision
 to the IEEE double-precision type.
</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:D#"
><A NAME="v%3AD%23"
></A
></A
><B
>D#</B
> <A HREF="GHC-Prim.html#t%3ADouble%23"
>Double#</A
></TD
><TD CLASS="rdoc"
></TD
></TR
></TABLE
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>newtype</SPAN
>  <A NAME="t:IO"
><A NAME="t%3AIO"
></A
></A
><B
>IO</B
> a </TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="ndoc"
><P
>A value of type <TT
><TT
><A HREF="GHC-Types.html#t%3AIO"
>IO</A
></TT
> a</TT
> is a computation which, when performed,
does some I/O before returning a value of type <TT
>a</TT
>.
</P
><P
>There is really only one way to &quot;perform&quot; an I/O action: bind it to
<TT
>Main.main</TT
> in your program.  When your program is run, the I/O will
be performed.  It isn't possible to perform I/O from an arbitrary
function, unless that function is itself in the <TT
><A HREF="GHC-Types.html#t%3AIO"
>IO</A
></TT
> monad and called
at some point, directly or indirectly, from <TT
>Main.main</TT
>.
</P
><P
><TT
><A HREF="GHC-Types.html#t%3AIO"
>IO</A
></TT
> is a monad, so <TT
><A HREF="GHC-Types.html#t%3AIO"
>IO</A
></TT
> actions can be combined using either the do-notation
or the &gt;&gt; and &gt;&gt;= operations from the Monad class.
</P
></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:IO"
><A NAME="v%3AIO"
></A
></A
><B
>IO</B
> (<A HREF="GHC-Prim.html#t%3AState%23"
>State#</A
> <A HREF="GHC-Prim.html#t%3ARealWorld"
>RealWorld</A
> -&gt; (#<A HREF="GHC-Prim.html#t%3AState%23"
>State#</A
> <A HREF="GHC-Prim.html#t%3ARealWorld"
>RealWorld</A
>, a#))</TD
><TD CLASS="rdoc"
></TD
></TR
></TABLE
></TD
></TR
></TABLE
></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
>