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Mahler, Thomas 2020-03-28 21:32:27 +01:00
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@ -416,7 +416,6 @@ A list containing the three numbers 1, 2, 3 is contructed like this:
Luckily the language designers have been so kind to offer some syntactic sugar for this. So the first list can be
written as `[1]` and the second as `[1, 2, 3]`.
```haskell
-- | Extract the first element of a list, which must be non-empty.
head :: [a] -> a