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VL2/content/VL2_questions_for_you.tex
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@ -3,7 +3,17 @@
\item what is the difference between \hinline{foldr} and \hinline{foldl}? \item what is the difference between \hinline{foldr} and \hinline{foldl}?
\item what is the difference between explicit and implicit recursion? Give examples \item what is the difference between explicit and implicit recursion? Give examples
\item how many arguments does a haskell function have (strictly speaking)? \item how many arguments does a haskell function have (strictly speaking)?
\item Are these type signatures technically equivalent?
\begin{haskellcode}
f :: Int -> Int -> Char -> Int -> Int -> Char
f :: Int -> Int -> (Char -> (Int -> (Int -> Char)))
\end{haskellcode}
% $
\item what do you have to keep in mind in order to make function composition work? \item what do you have to keep in mind in order to make function composition work?
\item can you define \hinline{map} and \hinline{filter} in terms of \hinline{foldr}? \item can you define \hinline{map} and \hinline{filter} in terms of \hinline{foldr}?
\item what is eta reduction (or: eta abstraction)? \item simplify (and eta reduce) the following code snippet
\begin{haskellcode}
f x y = (\d e -> d * e) x $ y
\end{haskellcode}
% $
\end{itemize} \end{itemize}