You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
- Let's abstract out the common pieces! This will be our type signature:
- \begin{haskellcode}
- filter :: (a -> Bool) -> [a] -> [a]
- \end{haskellcode}
- Solution?
- \pause
- \begin{haskellcode}
- filter :: (a -> Bool) -> [a] -> [a]
- filter f [] = []
- filter f (x:xs)
- | f x = x : filter f xs
- | otherwise = filter f xs
- \end{haskellcode}
- Again: this function is part of the \emph{Prelude} as well.
|