1 Types G6021: Comparative Programming Exercise Sheet 7 What are the types of the following? In each case, try to work out the type first, then check with Haskell. (Note: at least one of these does not have a type!) ix=x kxy=x zero f x = x one f x = f x two f […]
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1 G6021: Comparative Programming Exercise Sheet 6 Higher-Order functions on lists Write a function sumAll that returns the sum of all the elements of a list of numbers. Write a function multAll that returns the product of all the elements of a list of numbers. The pattern of recursion should be the same in the
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G6021: Comparative Programming Exercise Sheet 4 1 Data Types In Haskell we can define our own types in two ways: • Renaming old types, for example: type Name = [Char]. • Constructing new types, for example: data MyBool = T | F. (Adding deriving (Show) means that Haskell will print these types.) When constructing new
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G6021: Comparative Programming Exercise Sheet 4 1 Data Types In Haskell we can define our own types in two ways: • Renaming old types, for example: type Name = [Char]. • Constructing new types, for example: data MyBool = T | F. (Adding deriving (Show) means that Haskell will print these types.) When constructing new
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1 1. Types 2 1. 2. 3. 3 1. 4 Take What are the types of the following Haskell expressions. Try to think what they might be before checking with the Haskell interpreter. (a) (*) (b) (&&) True (c) \x -> \f -> f (f x) (d) tail [1,2,3] (e) error (f) \(x,y) -> x&&True
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G6021: Comparative Programming Exercise Sheet 1 (self study) 1 Starting Haskell The aim is to make a start with using the Haskell system. We will use GHCi, which is an interactive environment (interpreter), and is part of a larger toolset known as the Glasgow Haskell Compiler. Haskell expressions can be interactively evaluated and programs can
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1 Types 2 1. (a) (*) (b) (&&) True (c) \x -> \f -> f (f x) (d) tail [1,2,3] (e) error (f) \(x,y) -> x&&True Answer: Each of these can be tested in Haskell by entering: :t followed by the expression at the prompt. The answers below are not exactly the same as what
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G6021: Comparative Programming Exercise Sheet 2 1 Function arguments If a function needs two arguments, it can take them one at a time or both together, as illustrated by the following functions: f x y = x+y g (x,y) = x+y 1. 2. 3. 4. 5. 2 1. 2. 3. 4. What are the types
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1 1. 2. 3. 4. 5. G6021: Comparative Programming Exercise Sheet 3 Functions on lists Write a function addOneToAll that will add one to all the elements of a list. Write this two ways, first using pattern matching, then using list comprehensions. Write a function timesTwoToAll that will multiply all the elements of a list
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6/25/22, 8:50 PM Homework 6 Homework 6 Due Saturday by 2:59am Points 100 Submitting a file upload State transition network Copyright By PowCoder代写 加微信 powcoder In this exercise, you’ll need to think about how lists can be put to use to do more complex tasks, such as traversing a graph. Prolog’s built-in backtracking and support
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