2.1.0.0 [2026.01.27]

• New API for working with vectors that are not parametric in element: Data.Vector.Fixed.Mono. It support data types like data V2 = V2 !Double !Double as well as all existing data types.
• Support for GHC<9.2 dropped.
• Prim could be derived using ViaFixed by deriving via mechanism and add data types defined in library now has Prim instance.
• Foldable1 could be derived using ViaFixed. All types for which it could be defined now has it. For GHC<9.6 foldable1-classes-compat is used.
• ifoldl' added.

2.0.0.0 [2025.07.10]

• Type family Dim returns Peano numbers instead of standard type level naturals.

  • Index type class restored and all indexing operation are performed in
  • Arity simplified
  • CVecPeano dropped and ContVec is parameterized using Peano numbers.

• In ArityPeano type class methods reverseF and gunfoldF are replaced with more general accumPeano and reducePeano.

• Unbox vector are fully reworked. All uses of data types with Unbox instances which are defined in the library except Bool should work without changes.

• Data.Vector.Fixed.Cont.arity dropped.

• Type of D.V.F.Cont.withFun generalized.

• Type class VectorN dropped. Use QuantifiedConstraints instead.

• Show instance now has form [...] instead of fromList [...].

• ViaFixed newtype wrapper for deriving instances is added. StorableViaFixed is removed.

• Data.Vector.Fixed.Storable.unsafeWith ensures that pointer won't get GC'd while function runs.

• Data.Vector.Fixed.sequenceA is deprecated in favor of sequence.

• foldl' and ifoldl' functions added.

• Implement sum as in terms of foldl'.

1.2.3.0 [2023-10-31]

• Pattern V1 added
• COMPLETE pragmas added for patterns V1,V2,V3,V4

1.2.2.1 [2022-12-29]

• Newtype StorableViaFixed for deriving Storable instances added.

1.2.1.1 [2022-12-26]

• Fixed bug in any (#18)

1.2.1.0 [2021-11-13]

• Support for GHC7.10 dropped.
• Pattern synonyms V2,V3,V4 added.
• replicate{,M} and generate{,M} added.
• Functions mk6, mk7, mk8 added.

1.2.0.0 [2018-09-02]

• Show instance for data type now respect precedence.

1.1.0.0 [2018-03-11]

• GHC8.4 compatibility release. Semigroup instances added and semigroup dependency added for GHC7.10

1.0.0.0 [2017-11-06]

• Vector length now expressed as GHC's type level literals. Underlying implementation still uses Peano numbers to perform induction. This doesn't change user facing API much. Notably FlexibleInstances and GADTs/TypeFamiles are now required to write Arity constraint.
• Monad constraint is relaxed to Applicative where applicable. Duplicate functions are removed (sequence & sequenceA → sequence, etc)
• Module Data.Vector.Fixed.Monomorphic is dropped.
• Construction of N-ary vectors reworked. Make type class is gone.
• Boxed arrays now use SmallArrays internally.
• overlaps is removed from API for mutable vectors.
• Data.Vector.Fixed.defaultRnf is added.
• Data.Vector.Fixed.Mutable.lengthI is dropped.

0.9.0.0 [2016-09-14]

• Simplification of Arity type class. This change shouldn't affect client code.
• Support for GHC < 7.8 is droppped.
• Fixed bug in any.

0.8.1.0 [2015-08-27]

• find function added.

0.8.0.0 [2015-04-06]

• NFData instances for all data type.
• Storable instances for all data types and default implementation of Storable's methods added.
• {i,}zipWith3 and {i,}zipWithM_ added.

0.7.0.3 [2015-01-03]

• GHC 7.10 support

0.7.0.0 [2014-08-15]

• Type level addition for unary numbers added
• concat function added
• More consistent naming for functions for working with Fun

0.6.4.0 [2014-04-15]

• Isomorphism between Peano numbers and Nat added. (GHC >= 7.8)

0.6.3.1 [2014-03-12]

• Documentation fixes.

0.6.3.0 [2014-02-22]

• Left scans added.

0.6.2.0 [2014-02-07]

• Vec1 type synonym for boxed/unboxed/etc. vectors added.
• Vector instance for Data.Typeable.Proxy (GHC >= 7.8)

0.6.1.1 [2014-02-04]

• GHC 7.8 support

0.6.1.0 [2014-01-24]

• distribute collect and their monadic variants added.

0.6.0.0 [2013-11-17]

• Data instance for all array-based vectors added.
• Storable instance added for Storable.Vec.
• Monoid instances added for all vectors.

0.5.1.0 [2013-08-06]

• Zero-element vector Empty'is added.

0.5.0.0 [2013-08-02]

• ContVec now behaves like normal vector. Arity type class is reworked. Id data type is removed.
• Construction of vector reworked.
• reverse, snoc, consV, fold and foldMap are added.
• Type changing maps and zips are added.
• Vector indexing with type level numbers is added.
• Twan van Laarhoven's lens added. (element and elementTy)
• Ord instances added to vector data types defined in the library.

0.4.4.0 [2013-06-13]

• Functor and Applicative instances are added to Id.

0.4.3.0 [2013-05-18]

• Typeable instance for S and Z added.

0.4.2.0 [2013-05-01]

• 1-tuple Only added.
• fromList' and fromListM added.
• apply functions from Arity type class generalized.

0.4.1.0 [2013-04-29]

• cons function added.
• Getter for Fun data type added.

0.4.0.0 [2013-04-04]

• Wrapper for monomorphics vectors is added.
• VecList is reimplemented as GADT and constructors are exported.
• Constructor of ContVecT is exported
• Empty ContVecT is implemented as empty.
• Typeable, Foldable and Traversable instances are added where appropriate

0.3.0.0 [2013-03-06]

• Vector type class definition is moved to the D.V.F.Cont module.
• Indexing function restored.
• unfoldr added.

0.2.0.0 [2013-02-10]

• Continuation-based vector added.
• Right fold added.
• tailWith, convertContinuation, and ! from Data.Vector.Fixed removed.
• Vector instance for tuples added.

0.1.2 [2013-01-26]

• imap, imapM, ifoldl, ifoldM, zipWithM, izipWithM functions are added.
• VectorN type class added.

0.1.1 [2012-11-29]

• foldM and tailWith added. Type synonyms for numbers up to 6 are added. Fun is reexported from Data.Vector.Fixed.