vector

Efficient Arrays

https://github.com/haskell/vector

Version on this page:0.12.3.1@rev:1
LTS Haskell 23.19:0.13.2.0@rev:1
Stackage Nightly 2025-04-21:0.13.2.0@rev:1
Latest on Hackage:0.13.2.0@rev:1

See all snapshots vector appears in

BSD-3-Clause licensed by Roman Leshchinskiy
Maintained by Haskell Libraries Team
This version can be pinned in stack with:vector-0.12.3.1@sha256:040210919e5ce454dcee3320f77803da3dbda579c8428dc25ff0155732234808,7946

Module documentation for 0.12.3.1

The vector package Build Status

An efficient implementation of Int-indexed arrays (both mutable and immutable), with a powerful loop optimisation framework.

See vector on Hackage for more information.

Changes

Changes in version 0.12.3.1

  • Bugfix for ghcjs and Double memset for Storable vector: #410
  • Avoid haddock bug: #383
  • Improve haddock and doctests
  • Disable problematic tests with -boundschecks #407

Changes in version 0.12.3.0

  • Fix performance regression due to introduction of keepAlive# primop in ghc-9.0: #372

  • Add monadic functions for mutable vectors: #338

    • Added folds for monadic functions: mapM_, imapM_, forM_, iforM_, foldl, foldl', foldM, foldM', ifoldl, ifoldl', ifoldM, ifoldM'
    • Added modifyM and unsafeModifyM for mutable vectors
    • Added generate and generateM for mutable vectors

Changes in version 0.12.2.0

  • Add MINIMAL pragma to Vector & MVector type classes: #11
  • Export unstreamM fromfrom Data.Vector.Generic: #70
  • New functions: unfoldrExactN and unfoldrExactNM: #140
  • Added iforM and iforM_: #262
  • Added MonadFix instance for boxed vectors: #178
  • Added uncons and unsnoc: #212
  • Added foldMap and foldMap': #263
  • Added isSameVector for storable vectors
  • Added toArray, fromArray, toMutableArray and fromMutableArray
  • Added iscanl, iscanl', iscanr, iscanr' to Primitive, Storable and Unboxed
  • Added izipWithM, izipWithM_, imapM and imapM_ to Primitive and Storable
  • Added ifoldM, ifoldM', ifoldM_ and ifoldM'_ to Primitive and Storable
  • Added eqBy and cmpBy
  • Added findIndexR to Generic: #172
  • Added catMaybes: #329
  • Added mapMaybeM and imapMaybeM: #183

Changes in version 0.12.1.2

  • Fix for lost function Data.Vector.Generic.mkType: #287

Changes in version 0.12.1.1 (deprecated)

  • add semigrioups dep to test suite so CI actually runs again on GHC < 8

Changes in version 0.12.1.0 (deprecated)

  • Fix integer overflows in specializations of Bundle/Stream enumFromTo on Integral types
  • Fix possibility of OutOfMemory with take and very large arguments.
  • Fix slice function causing segfault and not checking the bounds properly.
  • updated specialization rule for EnumFromTo on Float and Double to make sure it always matches the version in GHC Base (which changed as of 8.6) Thanks to Aleksey Khudyakov @Shimuuar for this fix.
  • fast rejection short circuiting in eqBy operations
  • the O2 test suite now has reasonable memory usage on every GHC version, special thanks to Alexey Kuleshevich (@lehins).
  • The Mutable type family is now injective on GHC 8.0 or later.
  • Using empty Storable vectors no longer results in division-by-zero errors.
  • The Data instances for Vector types now have well defined implementations for toConstr, gunfold, and dataTypeOf.
  • New function: partitionWith.
  • Add Unbox instances for Identity, Const, Down, Dual, Sum, Product, Min, Max, First, Last, WrappedMonoid, Arg, Any, All, Alt, and Compose.
  • Add NFData1 instances for applicable Vector types.

Changes in version 0.12.0.3

  • Monad Fail support

Changes in version 0.12.0.2

  • Fixes issue #220, compact heap operations crashing on boxed vectors constructed using traverse.
  • backport injective type family support
  • Cleanup the memset code internal to storable vector modules to be compatible with future Primitive releases

Changes in version 0.12.0.1

  • Make sure length can be inlined
  • Include modules that test-suites depend on in other-modules

Changes in version 0.12.0.0

  • Documentation fixes/additions
  • New functions: createT, iscanl/r, iterateNM, unfoldrM, uniq
  • New instances for various vector types: Semigroup, MonadZip
  • Made Storable vectors respect memory alignment
  • Changed some macros to ConstraintKinds
    • Dropped compatibility with old GHCs to support this
  • Add Eq1, Ord1, Show1, and Read1 Vector instances, and related helper functions.
  • Relax context for Unbox (Complex a).

Changes in version 0.11.0.0

  • Define Applicative instances for Data.Vector.Fusion.Util.{Box,Id}
  • Define non-bottom fail for instance Monad Vector
  • New generalized stream fusion framework
  • Various safety fixes
    • Various overflows due to vector size have been eliminated
    • Memory is initialized on creation of unboxed vectors
  • Changes to SPEC usage to allow building under more conditions

Changes in version 0.10.12.3

  • Allow building with primtive-0.6

Changes in version 0.10.12.2

  • Add support for deepseq-1.4.0.0

Changes in version 0.10.12.1

  • Fixed compilation on non-head GHCs

Changes in version 0.10.12.0

  • Export MVector constructor from Data.Vector.Primitive to match Vector’s (which was already exported).

  • Fix building on GHC 7.9 by adding Applicative instances for Id and Box

Changes in version 0.10.11.0

  • Support OverloadedLists for boxed Vector in GHC >= 7.8

Changes in version 0.10.10.0

  • Minor version bump to rectify PVP violation occured in 0.10.9.3 release

Changes in version 0.10.9.3 (deprecated)

  • Add support for OverloadedLists in GHC >= 7.8

Changes in version 0.10.9.2

  • Fix compilation with GHC 7.9

Changes in version 0.10.9.1

  • Implement poly-kinded Typeable

Changes in version 0.10.0.1

  • Require primitive to include workaround for a GHC array copying bug

Changes in version 0.10

  • NFData instances
  • More efficient block fills
  • Safe Haskell support removed