base: Core data structures and operations

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Haskell's base library provides, among other things, core types (e.g. Data.Bool and Data.Int), data structures (e.g. Data.List, Data.Tuple and Data.Maybe), the Control.Exception mechanism, and the System.IO & Control.Concurrent 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.

Modules

[Index] [Quick Jump]

Control
Data
Debug
- Debug.Trace
Foreign
GHC
- GHC.Arr
- GHC.ArrayArray
- GHC.Base
- GHC.Bits
- GHC.ByteOrder
- GHC.Char
- GHC.Clock
- GHC.Conc
  - GHC.Conc.IO
  - GHC.Conc.POSIX
    - GHC.Conc.POSIX.Const
  - GHC.Conc.Signal
  - GHC.Conc.Sync
  - GHC.Conc.WinIO
  - GHC.Conc.Windows
- GHC.ConsoleHandler
- GHC.Constants
- GHC.Desugar
- Encoding
  - GHC.Encoding.UTF8
- GHC.Enum
- GHC.Environment
- GHC.Err
- GHC.Event
  - GHC.Event.TimeOut
  - GHC.Event.Windows
    - GHC.Event.Windows.Clock
    - GHC.Event.Windows.ConsoleEvent
    - GHC.Event.Windows.FFI
    - GHC.Event.Windows.ManagedThreadPool
    - GHC.Event.Windows.Thread
- GHC.Exception
  - GHC.Exception.Type
- GHC.ExecutionStack
  - GHC.ExecutionStack.Internal
- GHC.Exts
- GHC.Fingerprint
  - GHC.Fingerprint.Type
- GHC.Float
  - GHC.Float.ConversionUtils
  - GHC.Float.RealFracMethods
- GHC.Foreign
- GHC.ForeignPtr
- GHC.GHCi
  - GHC.GHCi.Helpers
- GHC.Generics
- GHC.IO
  - GHC.IO.Buffer
  - GHC.IO.BufferedIO
  - GHC.IO.Device
  - GHC.IO.Encoding
    - GHC.IO.Encoding.CodePage
      - GHC.IO.Encoding.CodePage.API
      - GHC.IO.Encoding.CodePage.Table
    - 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
    - GHC.IO.Handle.FD
    - GHC.IO.Handle.Internals
    - GHC.IO.Handle.Lock
    - GHC.IO.Handle.Text
    - GHC.IO.Handle.Types
    - GHC.IO.Handle.Windows
  - GHC.IO.IOMode
  - GHC.IO.StdHandles
  - GHC.IO.SubSystem
  - GHC.IO.Unsafe
  - Windows
    - GHC.IO.Windows.Encoding
    - GHC.IO.Windows.Handle
    - GHC.IO.Windows.Paths
- GHC.IOArray
- GHC.IOPort
- GHC.IORef
- GHC.InfoProv
- GHC.Int
- GHC.Integer
  - GHC.Integer.Logarithms
- GHC.IsList
- GHC.Ix
- JS
  - Foreign
    - GHC.JS.Foreign.Callback
  - GHC.JS.Prim
    - GHC.JS.Prim.Internal
      - GHC.JS.Prim.Internal.Build
- GHC.List
- GHC.MVar
- GHC.Maybe
- GHC.Natural
- GHC.Num
  - GHC.Num.BigNat
  - GHC.Num.Integer
  - GHC.Num.Natural
- GHC.OldList
- GHC.OverloadedLabels
- GHC.Pack
- GHC.Profiling
- GHC.Ptr
- RTS
  - GHC.RTS.Flags
- GHC.Read
- GHC.Real
- GHC.Records
- GHC.ResponseFile
- GHC.ST
- GHC.STRef
- GHC.Show
- GHC.Stable
- GHC.StableName
- GHC.Stack
  - GHC.Stack.CCS
  - GHC.Stack.CloneStack
  - GHC.Stack.Types
- GHC.StaticPtr
- GHC.Stats
- GHC.Storable
- GHC.TopHandler
- GHC.TypeError
- GHC.TypeLits
  - GHC.TypeLits.Internal
- GHC.TypeNats
  - GHC.TypeNats.Internal
- GHC.Unicode
- GHC.Weak
  - GHC.Weak.Finalize
- GHC.Windows
- GHC.Word
Numeric
- Numeric.Natural
Prelude
System
Text
- ParserCombinators
  - Text.ParserCombinators.ReadP
  - Text.ParserCombinators.ReadPrec
- Text.Printf
- Text.Read
  - Text.Read.Lex
- Text.Show
  - Text.Show.Functions
Type
- Type.Reflection
  - Type.Reflection.Unsafe
Unsafe
- Unsafe.Coerce

Downloads

base-4.19.2.0.tar.gz [browse] (Cabal source package)
Package description (as included in the package)

Maintainer's Corner

Package maintainers

AustinSeipp, BenGamari, HerbertValerioRiedel, IanLynagh, LuiteStegeman, PaoloCapriotti, wz1000

For package maintainers and hackage trustees

edit package information

Candidates

4.14.3.0, 4.15.1.0, 4.16.0.0, 4.16.1.0, 4.16.2.0, 4.16.3.0, 4.16.4.0, 4.17.0.0, 4.18.0.0, 4.18.1.0, 4.18.3.0, 4.19.0.0, 4.19.2.0, 4.20.0.0

Versions [RSS]	3.0.3.1, 3.0.3.2, 4.0.0.0, 4.1.0.0, 4.2.0.0, 4.2.0.1, 4.2.0.2, 4.3.0.0, 4.3.1.0, 4.4.0.0, 4.4.1.0, 4.5.0.0, 4.5.1.0, 4.6.0.0, 4.6.0.1, 4.7.0.0, 4.7.0.1, 4.7.0.2, 4.8.0.0, 4.8.1.0, 4.8.2.0, 4.9.0.0, 4.9.1.0, 4.10.0.0, 4.10.1.0, 4.11.0.0, 4.11.1.0, 4.12.0.0, 4.13.0.0, 4.14.0.0, 4.14.1.0, 4.14.2.0, 4.14.3.0, 4.15.0.0, 4.15.1.0, 4.16.0.0, 4.16.1.0, 4.16.2.0, 4.16.3.0, 4.16.4.0, 4.17.0.0, 4.17.1.0, 4.17.2.0, 4.17.2.1, 4.18.0.0, 4.18.1.0, 4.18.2.0, 4.18.2.1, 4.18.3.0, 4.19.0.0, 4.19.1.0, 4.19.2.0, 4.20.0.0, 4.20.0.1, 4.20.1.0, 4.20.2.0, 4.21.0.0, 4.21.1.0, 4.22.0.0
Change log	changelog.md
Dependencies	ghc-bignum (>=1.0 && <2.0), ghc-prim (>=0.5.1.0 && <0.12), rts (>=1.0 && <1.1) [details]
License	BSD-3-Clause
Author
Maintainer	Core Libraries Committee <core-libraries-committee@haskell.org>
Uploaded	by BenGamari at 2024-10-21T18:13:28Z
Category	Prelude
Bug tracker	https://github.com/haskell/core-libraries-committee/issues
Source repo	head: git clone https://gitlab.haskell.org/ghc/ghc.git(libraries/base)
Distributions	Alpine:4.19.0.0, AuditTest:4.19.0.0, Chocolatey:4.19.0.0, Conda:4.19.0.0, Fedora:4.20.2.0, FreeBSD:4.19.0.0, Gentoo:4.19.0.0, Homebrew:4.19.0.0, NixOS:4.19.0.0
Reverse Dependencies	17356 direct, 74 indirect [details]
Downloads	69279 total (162 in the last 30 days)
Rating	2.75 (votes: 38) [estimated by Bayesian average]
Your Rating	λ λ λ
Status	Docs uploaded by user Build status unknown [no reports yet]