[exercise] 3.2

Author: Dev-XYS

chapter03-Types-and-classes/2.hs

@@ -0,0 +1,14 @@
+bools :: [Bool]
+bools = [True, False]
+
+nums :: [[Int]]
+nums = [[1], [2, 3]]
+
+add :: Int -> Int -> Int -> Int
+add x y z = x + y + z
+
+copy :: a -> (a, a)
+copy x = (x, x)
+
+apply :: (a -> b) -> a -> b
+apply f x = f x