-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | Provides readMaybe, lookupEnv, etc. for older versions of base
--   
--   Provides new additions to base for older versions of base, so that
--   they can be used without sacrificing backward compatibility.
--   
--   So far the following is covered:
--   
--   <ul>
--   <li>readMaybe</li>
--   <li>readEither</li>
--   <li>lookupEnv</li>
--   <li>&lt;&gt;</li>
--   <li>System.IO.Error.catch is not re-exported from Prelude for older
--   versions of base</li>
--   </ul>
@package base-compat
@version 0.2.0

module Text.Show.Functions

module Data.STRef.Strict

module Control.Monad.ST.Strict

module Control.Monad.Instances

module GHC.ConsoleHandler

module GHC.PArr

module GHC.TopHandler

module GHC.IO.Handle.Text

module GHC.IO.FD

module GHC.Conc.IO

module GHC.IO.Handle.Internals

module Foreign.Safe

module System.Posix.Internals

module Foreign.Marshal.Safe

module Foreign.C

module GHC.IO.Exception

module GHC.IO.Handle.Types

module GHC.Weak

module Foreign.ForeignPtr

module GHC.ForeignPtr

module GHC.Unicode

module GHC.Storable

module GHC.Pack

module GHC.Stable

module GHC.Ptr

module GHC.IO.IOMode

module GHC.Int

module GHC.Word

module GHC.Read

module GHC.IORef

module GHC.STRef

module GHC.Float

module GHC.Float.ConversionUtils

module GHC.Float.RealFracMethods

module GHC.MVar

module GHC.IOArray

module GHC.IO

module GHC.Arr

module GHC.Real

module GHC.Err

module GHC.Enum

module GHC.ST

module GHC.Show

module GHC.List

module GHC.Num

module GHC.Base

module GHC.IO.Encoding.CodePage

module Text.Printf

module System.Mem.StableName

module System.Mem

module System.Info

module System.Environment

-- | Return the value of the environment variable <tt>var</tt>, or
--   <tt>Nothing</tt> if there is no such value.
--   
--   For POSIX users, this is equivalent to <a>getEnv</a>.
lookupEnv :: String -> IO (Maybe String)

module System.CPUTime

module System.Console.GetOpt

module Data.Version

module Data.STRef.Lazy

module Data.Fixed

module Data.Complex

module Control.Monad.ST.Lazy

module Control.Monad.ST.Lazy.Unsafe

module Control.Monad.ST.Lazy.Safe

module Control.Monad.ST

module Data.Function

module System.Timeout

module Control.Concurrent.Chan

module Data.Unique

module GHC.Stats

module Debug.Trace

module GHC.Stack

module GHC.Environment

module Control.Category

module GHC.Constants

module GHC.Event

module GHC.IO.Encoding.Iconv

module System.Posix.Types

module GHC.Conc.Signal

module GHC.Conc.Sync

module Control.Concurrent

module GHC.Conc

module Foreign.Marshal

module Foreign.Marshal.Pool

module Foreign.Marshal.Error

module Foreign.C.Error

module Foreign.C.String

module GHC.Foreign

module Foreign.Marshal.Array

module Foreign.Marshal.Utils

module GHC.IO.Handle.FD

module GHC.IO.Encoding.UTF32

module GHC.IO.Encoding.UTF16

module GHC.IO.Encoding.UTF8

module GHC.IO.Encoding.Latin1

module GHC.IO.Encoding.Failure

module Foreign.Marshal.Alloc

module System.Exit

module GHC.IO.Handle

module GHC.IO.BufferedIO

module GHC.IO.Encoding

module GHC.IO.Encoding.Types

module GHC.IO.Buffer

module Foreign

module Data.Monoid

-- | An infix synonym for <a>mappend</a>.
(<>) :: Monoid m => m -> m -> m

module System.Mem.Weak

module Data.Dynamic

module Foreign.Concurrent

module Foreign.ForeignPtr.Unsafe

module Foreign.ForeignPtr.Safe

module Foreign.C.Types

module Foreign.Storable

module GHC.IO.Device

module GHC.Fingerprint

module GHC.Fingerprint.Type

module Text.ParserCombinators.ReadPrec

module Text.Read.Lex

module Text.ParserCombinators.ReadP

module Data.IORef

module Data.STRef

module Data.Bits

module Control.Concurrent.MVar

module Foreign.Marshal.Unsafe

module System.IO.Unsafe

module System.IO.Error

module Numeric

module Data.Typeable

module Control.Monad.ST.Unsafe

module Data.Maybe

module Data.Functor

module Unsafe.Coerce

module Data.Either

module Foreign.Ptr

module Data.Word

module Control.Monad.ST.Safe

module Data.Ratio

module Data.Int

module Data.Char

module Data.Traversable

module Data.Foldable

module Control.Applicative

module Data.Typeable.Internal

module Data.Ix

module Text.Show

module Text.Read

-- | Parse a string using the <a>Read</a> instance. Succeeds if there is
--   exactly one valid result. A <a>Left</a> value indicates a parse error.
readEither :: Read a => String -> Either String a

-- | Parse a string using the <a>Read</a> instance. Succeeds if there is
--   exactly one valid result.
readMaybe :: Read a => String -> Maybe a

module Data.Data

module Control.Monad.Zip

module Data.String

module GHC.Desugar

module Control.Arrow

module Control.Monad.Fix

module Control.Monad

module Data.Ord

module Data.Eq

module Data.Bool

module Data.Tuple

module System.IO

module Foreign.StablePtr

module Prelude

module GHC.Exception
instance Ord ErrorCall
instance Eq ErrorCall

module Control.Exception

module Data.List

module GHC.Exts

module Control.Exception.Base