base-4.21.0.0: Core data structures and operations

Haskell's base library provides, among other things, core types (e.g. Bool and Int), data structures (e.g. List, Tuple and Maybe), the Exception mechanism, and the IO & Concurrency operations. The Prelude module, which is imported by default, exposes a curated set of types and functions from other modules.

Other data structures like Map, Set are available in the containers library. To work with textual data, use the text library.

• Control
  Submodules

  • Control.Applicative
  • Control.Arrow
  • Control.Category
  • Control.Concurrent
    Submodules

    • Control.Concurrent.Chan
    • Control.Concurrent.MVar
    • Control.Concurrent.QSem
    • Control.Concurrent.QSemN
  • Control.Exception
    Submodules

    • Control.Exception.Annotation
    • Control.Exception.Backtrace
    • Control.Exception.Base
    • Control.Exception.Context
  • Control.Monad
    Submodules

    • Control.Monad.Fail
    • Control.Monad.Fix
    • IO
      Submodules

      • Control.Monad.IO.Class
    • Control.Monad.Instances
    • Control.Monad.ST
      Submodules

      • Control.Monad.ST.Lazy
        Submodules

        • Control.Monad.ST.Lazy.Safe
        • Control.Monad.ST.Lazy.Unsafe
      • Control.Monad.ST.Safe
      • Control.Monad.ST.Strict
      • Control.Monad.ST.Unsafe
    • Control.Monad.Zip
• Data
  Submodules

  • Array
    Submodules

    • Data.Array.Byte
  • Data.Bifoldable
  • Data.Bifoldable1
  • Data.Bifunctor
  • Data.Bitraversable
  • Data.Bits
  • Data.Bool
  • Data.Bounded
  • Data.Char
  • Data.Coerce
  • Data.Complex
  • Data.Data
  • Data.Dynamic
  • Data.Either
  • Data.Enum
  • Data.Eq
  • Data.Fixed
  • Data.Foldable
  • Data.Foldable1
  • Data.Function
  • Data.Functor
    Submodules

    • Data.Functor.Classes
    • Data.Functor.Compose
    • Data.Functor.Const
    • Data.Functor.Contravariant
    • Data.Functor.Identity
    • Data.Functor.Product
    • Data.Functor.Sum
  • Data.IORef
  • Data.Int
  • Data.Ix
  • Data.Kind
  • Data.List
    Submodules

    • Data.List.NonEmpty
  • Data.Maybe
  • Data.Monoid
  • Data.Ord
  • Data.Proxy
  • Data.Ratio
  • Data.STRef
    Submodules

    • Data.STRef.Lazy
    • Data.STRef.Strict
  • Data.Semigroup
  • Data.String
  • Data.Traversable
  • Data.Tuple
  • Type
    Submodules

    • Data.Type.Bool
    • Data.Type.Coercion
    • Data.Type.Equality
    • Data.Type.Ord
  • Data.Typeable
  • Data.Unique
  • Data.Version
  • Data.Void
  • Data.Word
• Debug
  Submodules

  • Debug.Trace
• Foreign
  Submodules

  • Foreign.C
    Submodules

    • Foreign.C.ConstPtr
    • Foreign.C.Error
    • Foreign.C.String
    • Foreign.C.Types
  • Foreign.Concurrent
  • Foreign.ForeignPtr
    Submodules

    • Foreign.ForeignPtr.Safe
    • Foreign.ForeignPtr.Unsafe
  • Foreign.Marshal
    Submodules

    • Foreign.Marshal.Alloc
    • Foreign.Marshal.Array
    • Foreign.Marshal.Error
    • Foreign.Marshal.Pool
    • Foreign.Marshal.Safe
    • Foreign.Marshal.Unsafe
    • Foreign.Marshal.Utils
  • Foreign.Ptr
  • Foreign.Safe
  • Foreign.StablePtr
  • Foreign.Storable
• GHC
  Submodules

  • GHC.Arr
  • GHC.ArrayArray
  • GHC.Base
  • GHC.Bits
  • GHC.ByteOrder
  • GHC.Char
  • GHC.Clock
  • GHC.Conc
    Submodules

    • GHC.Conc.IO
    • GHC.Conc.Signal
    • GHC.Conc.Sync
  • GHC.ConsoleHandler
  • GHC.Constants
  • GHC.Desugar
  • Encoding
    Submodules

    • GHC.Encoding.UTF8
  • GHC.Enum
  • GHC.Environment
  • GHC.Err
  • GHC.Event
    Submodules

    • GHC.Event.TimeOut
  • GHC.Exception
    Submodules

    • GHC.Exception.Type
  • GHC.ExecutionStack
    Submodules

    • GHC.ExecutionStack.Internal
  • GHC.Exts
  • GHC.Fingerprint
    Submodules

    • GHC.Fingerprint.Type
  • GHC.Float
    Submodules

    • GHC.Float.ConversionUtils
    • GHC.Float.RealFracMethods
  • GHC.Foreign
  • GHC.ForeignPtr
  • GHC.GHCi
    Submodules

    • GHC.GHCi.Helpers
  • GHC.Generics
  • GHC.IO
    Submodules

    • GHC.IO.Buffer
    • GHC.IO.BufferedIO
    • GHC.IO.Device
    • GHC.IO.Encoding
      Submodules

      • GHC.IO.Encoding.CodePage
      • GHC.IO.Encoding.Failure
      • GHC.IO.Encoding.Iconv
      • GHC.IO.Encoding.Latin1
      • GHC.IO.Encoding.Types
      • GHC.IO.Encoding.UTF16
      • GHC.IO.Encoding.UTF32
      • GHC.IO.Encoding.UTF8
    • GHC.IO.Exception
    • GHC.IO.FD
    • GHC.IO.Handle
      Submodules

      • GHC.IO.Handle.FD
      • GHC.IO.Handle.Internals
      • GHC.IO.Handle.Lock
      • GHC.IO.Handle.Text
      • GHC.IO.Handle.Types
    • GHC.IO.IOMode
    • GHC.IO.StdHandles
    • GHC.IO.SubSystem
    • GHC.IO.Unsafe
  • GHC.IOArray
  • GHC.IOPort
  • GHC.IORef
  • GHC.InfoProv
  • GHC.Int
  • GHC.Integer
    Submodules

    • GHC.Integer.Logarithms
  • GHC.IsList
  • GHC.Ix
  • GHC.List
  • GHC.MVar
  • GHC.Maybe
  • GHC.Natural
  • GHC.Num
  • GHC.OldList
  • GHC.OverloadedLabels
  • GHC.Profiling
  • GHC.Ptr
  • RTS
    Submodules

    • GHC.RTS.Flags
  • GHC.Read
  • GHC.Real
  • GHC.Records
  • GHC.ResponseFile
  • GHC.ST
  • GHC.STRef
  • GHC.Show
  • GHC.Stable
  • GHC.StableName
  • GHC.Stack
    Submodules

    • GHC.Stack.CCS
    • GHC.Stack.CloneStack
    • GHC.Stack.Types
  • GHC.StaticPtr
  • GHC.Stats
  • GHC.Storable
  • GHC.TopHandler
  • GHC.TypeError
  • GHC.TypeLits
    Submodules

    • GHC.TypeLits.Internal
  • GHC.TypeNats
    Submodules

    • GHC.TypeNats.Internal
  • GHC.Unicode
  • GHC.Weak
    Submodules

    • GHC.Weak.Finalize
  • GHC.Word
• Numeric
  Submodules

  • Numeric.Natural
• Prelude
• System
  Submodules

  • System.CPUTime
  • Console
    Submodules

    • System.Console.GetOpt
  • System.Environment
    Submodules

    • System.Environment.Blank
  • System.Exit
  • System.IO
    Submodules

    • System.IO.Error
    • System.IO.Unsafe
  • System.Info
  • System.Mem
    Submodules

    • System.Mem.StableName
    • System.Mem.Weak
  • Posix
    Submodules

    • System.Posix.Internals
    • System.Posix.Types
  • System.Timeout
• Text
  Submodules

  • ParserCombinators
    Submodules

    • Text.ParserCombinators.ReadP
    • Text.ParserCombinators.ReadPrec
  • Text.Printf
  • Text.Read
    Submodules

    • Text.Read.Lex
  • Text.Show
    Submodules

    • Text.Show.Functions
• Type
  Submodules

  • Type.Reflection
    Submodules

    • Type.Reflection.Unsafe
• Unsafe
  Submodules

  • Unsafe.Coerce