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Diffstat (limited to 'applicative/h2.hs')
-rw-r--r-- | applicative/h2.hs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/applicative/h2.hs b/applicative/h2.hs new file mode 100644 index 0000000..6d9b801 --- /dev/null +++ b/applicative/h2.hs @@ -0,0 +1,10 @@ +import Control.Applicative + +newtype MyZipList a = MyZipList { getMyZipList :: [a] } + +instance Functor MyZipList where + fmap f (MyZipList x) = MyZipList (fmap f x) + +instance Applicative MyZipList where + pure x = MyZipList [x] + (MyZipList gs) <*> (MyZipList xs) = MyZipList (zipWith ($) gs xs) |