1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
{-# LANGUAGE DefaultSignatures #-}
{-# LANGUAGE TypeOperators #-}
module Foundation.Collection.InnerFunctor
( InnerFunctor(..)
) where
import Basement.Compat.Base
import Foundation.Collection.Element
import qualified Basement.String as S
import qualified Basement.UArray as UV
import Basement.BoxedArray (Array)
-- | A monomorphic functor that maps the inner values to values of the same type
class InnerFunctor c where
imap :: (Element c -> Element c) -> c -> c
default imap :: (Functor f, Element (f a) ~ a, f a ~ c) => (Element c -> Element c) -> c -> c
imap = fmap
instance InnerFunctor [a]
instance UV.PrimType ty => InnerFunctor (UV.UArray ty) where
imap = UV.map
instance InnerFunctor (Array ty)
instance InnerFunctor S.String where
imap = S.charMap
|
