1 files changed, 10 insertions, 0 deletions
diff --git a/h14.hs b/h14.hs
new file mode 100644
index 0000000..e7ad73d
--- /dev/null
+++ b/h14.hs
@@ -0,0 +1,10 @@
+import Control.Applicative
+
+dupli :: [a] -> [a]
+dupli = concatMap (replicate 2)
+
+dupli' xs = concat [ [x,x] | x <- xs ]
+
+dupli'' = (<**> [id,id])
+
+dupli''' = foldr ((.) <$> (:) <*> (:)) []