From c790672cc244ac4caba1bda3572829a6c6862891 Mon Sep 17 00:00:00 2001 From: Ben Sima Date: Sun, 27 Oct 2019 09:48:52 -0700 Subject: move everything to namespace directories --- com/simatime/network.hs | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 com/simatime/network.hs (limited to 'com/simatime/network.hs') diff --git a/com/simatime/network.hs b/com/simatime/network.hs new file mode 100644 index 0000000..e47e891 --- /dev/null +++ b/com/simatime/network.hs @@ -0,0 +1,31 @@ +-- | A port of Kris Jenkins' RemoteData Elm module +-- . +-- +module Com.Simatime.Network where + +data RemoteData a b + = NotAsked + | Loading + | Failure a + | Success b + deriving (Eq, Show) + +-- TODO figure out Http.Error +-- type WebData a = RemoteData Http.Error a + +instance Functor (RemoteData a) where + fmap _ NotAsked = NotAsked + fmap _ Loading = Loading + fmap _ (Failure a) = Failure a + fmap f (Success a) = Success (f a) + +instance Applicative (RemoteData e) where + pure = Success + NotAsked <*> _ = NotAsked + Loading <*> _ = Loading + Failure a <*> _ = Failure a + Success a <*> b = fmap a b + +fromEither :: Either a b -> RemoteData a b +fromEither (Left a) = Failure a +fromEither (Right a) = Success a -- cgit v1.2.3