[Haskell-beginners] Beginners Digest, Vol 45, Issue 35

[franco00 at gmx.com]

unique :: [Integer] -> [Integer]
 unique [] = []
 unique (x:xs) | elem x xs = (unique . filter (/= x)) xs
 | otherwise = x : unique xs

 -- This is a simpler to read version (albeit inefficient?)
 unique :: [Integer] -> [Integer]
 unique [] = []
 unique (x:xs) | elem x xs = unique xs
 | otherwise = x : unique xs
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