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Merged
Shimuuar merged 3 commits into from
Jan 1, 2026
Merged

Add ifoldl' & small fixes #39

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eabeb73
Redundant constraint
Shimuuar Dec 31, 2025
49743fb
Missing export of ifoldl'
Shimuuar Dec 31, 2025
2e9cf8d
Simplify elementTy
Shimuuar Dec 31, 2025
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2 changes: 1 addition & 1 deletion fixed-vector/ChangeLog.md
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@
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]
------------------
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1 change: 1 addition & 0 deletions fixed-vector/Data/Vector/Fixed.hs
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Expand Up @@ -129,6 +129,7 @@ module Data.Vector.Fixed (
, fold
, foldMap
, ifoldl
, ifoldl'
, ifoldr
, foldM
, ifoldM
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6 changes: 2 additions & 4 deletions fixed-vector/Data/Vector/Fixed/Internal.hs
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Expand Up @@ -273,9 +273,7 @@ elementTy :: forall k v a f proxy. (Vector v a, Index (Peano k) (Dim v), Functor
=> proxy k -> (a -> f a) -> (v a -> f (v a))
{-# INLINE elementTy #-}
elementTy _ f v
= fmap vector
$ inspect (C.cvec v)
(C.lensF (proxy# @(Peano k)) f construct)
= inspect v (C.lensF (proxy# @(Peano k)) f construct)

-- | Left fold over vector
foldl :: Vector v a => (b -> a -> b) -> b -> v a -> b
Expand Down Expand Up @@ -607,7 +605,7 @@ izipWithM f v u = fmap vector
-- | Zip two vector elementwise using monadic function and discard
-- result
izipWithM_
:: (Vector v a, Vector v b, Vector v c, Applicative f, Vector v (f c))
:: (Vector v a, Vector v b, Vector v c, Applicative f)
=> (Int -> a -> b -> f c) -> v a -> v b -> f ()
{-# INLINE izipWithM_ #-}
izipWithM_ f xs ys = C.izipWithM_ f (C.cvec xs) (C.cvec ys)
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