Add 'users/glittershark/xanthous/' from commit '53b56744f4335c038724a1bcffc27a7eb8cf6a6d' r/978

git-subtree-dir: users/glittershark/xanthous
git-subtree-mainline: 91f53f02d8479303910abfd3f3690d3ef27e6c4b
git-subtree-split: 53b56744f4335c038724a1bcffc27a7eb8cf6a6d

1 files changed, 36 insertions, 0 deletions

diff --git a/users/glittershark/xanthous/src/Xanthous/Prelude.hs b/users/glittershark/xanthous/src/Xanthous/Prelude.hs
new file mode 100644
index 000000000000..9a4ca0149f1a
--- /dev/null
+++ b/users/glittershark/xanthous/src/Xanthous/Prelude.hs
@@ -0,0 +1,36 @@
+--------------------------------------------------------------------------------
+module Xanthous.Prelude
+  ( module ClassyPrelude
+  , Type
+  , Constraint
+  , module GHC.TypeLits
+  , module Control.Lens
+  , module Data.Void
+  , module Control.Comonad
+
+
+    -- * Classy-Prelude addons
+  , ninsertSet
+  , ndeleteSet
+  , toVector
+  ) where
+--------------------------------------------------------------------------------
+import ClassyPrelude hiding
+  (return, (<|), unsnoc, uncons, cons, snoc, index, (<.>), Index, say)
+import Data.Kind
+import GHC.TypeLits hiding (Text)
+import Control.Lens hiding (levels, Level)
+import Data.Void
+import Control.Comonad
+--------------------------------------------------------------------------------
+
+ninsertSet
+  :: (IsSet set, MonoPointed set)
+  => Element set -> NonNull set -> NonNull set
+ninsertSet x xs = impureNonNull $ opoint x `union` toNullable xs
+
+ndeleteSet :: IsSet b => Element b -> NonNull b -> b
+ndeleteSet x = deleteSet x . toNullable
+
+toVector :: (MonoFoldable (f a), Element (f a) ~ a) => f a -> Vector a
+toVector = fromList . toList