Created
April 28, 2019 07:49
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| add :: a -> [a] -> [a] | |
| add x xs = x : xs | |
| -- it is more common to write as | |
| -- add = (:) | |
| remove :: (Eq a) => a -> [a] -> [a] | |
| remove _ [] = [] | |
| remove t (x:xs) = if t == x then remove t xs else remove t (x:xs) | |
| -- you can also write it as a fold | |
| -- remove t = foldr (\x xs -> if x == t then xs else x:xs) [] |
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