From a Programming language Haskell, what could be a answer for these type declaration? type1 :: a -> b -> c type2 :: (a -> b -> c) -> (a,b) -> c type3 :: (a -> b) -> (b -> c) -> a -> c type4 :: (a -> b -> c) -> a -> (d -> b) -> d -> c type5 :: (a -> b -> c) -> (d -> a) -> (e -> b) -> d -> e -> c type6 :: (a -> a -> [a]) -> b -> (b -> [a] -> c) -> a -> c type7 :: (a -> [b]) -> (b -> c) -> a -> c -> [c] type8 :: ((a -> b) -> c -> d) -> b -> c -> d type9 :: ((a,b) -> c) -> (c -> d) -> [(a,b)] -> [d]
From a Programming language Haskell, what could be a answer for these type declaration? type1 :: a -> b -> c type2 :: (a -> b -> c) -> (a,b) -> c type3 :: (a -> b) -> (b -> c) -> a -> c type4 :: (a -> b -> c) -> a -> (d -> b) -> d -> c type5 :: (a -> b -> c) -> (d -> a) -> (e -> b) -> d -> e -> c type6 :: (a -> a -> [a]) -> b -> (b -> [a] -> c) -> a -> c type7 :: (a -> [b]) -> (b -> c) -> a -> c -> [c] type8 :: ((a -> b) -> c -> d) -> b -> c -> d type9 :: ((a,b) -> c) -> (c -> d) -> [(a,b)] -> [d]
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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what could be a answer for these type declaration?
type1 :: a -> b -> c
type2 :: (a -> b -> c) -> (a,b) -> c
type3 :: (a -> b) -> (b -> c) -> a -> c
type4 :: (a -> b -> c) -> a -> (d -> b) -> d -> c
type5 :: (a -> b -> c) -> (d -> a) -> (e -> b) -> d -> e -> c
type6 :: (a -> a -> [a]) -> b -> (b -> [a] -> c) -> a -> c
type7 :: (a -> [b]) -> (b -> c) -> a -> c -> [c]
type8 :: ((a -> b) -> c -> d) -> b -> c -> d
type9 :: ((a,b) -> c) -> (c -> d) -> [(a,b)] -> [d]
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