Haskell: What is the role of Haskell's kind system?O Kinds classify values (e.g., 5 has kind Int)Kinds constrain polymorphism (e.g., max works with any type of kind Ord)Kinds classify type constructors (e.g., Maybe has kind Type -> Type)Kinds classify data constructors (e.g., Just has kind Maybe)All of the aboveO None of the aboveO I don't know Haskell: Recall the function (++), as defined in the Prelude[ ](х:xs) ++ ys 3D х :++ ysys(xs ++ ys)If we have four large lists we wish to concatenate, which of the expressions below is the most efficient?a ++ (b ++ (c ++ d))O (a ++ b) ++ (c ++ d)a ++ (b ++ c) ++ dO ((a ++ b) ++ c) ++ dO All of the aboveO None of the aboveO I don't know

The solution for the above given question is given below:

Haskell: What is the role of Haskell's kind system? O Kinds classify values (e.g., 5 has kind Int) O Kinds constrain polymorphism (e.g., max works with any type of kind Ord) O Kinds classify type constructors (e.g., Maybe has kind Type -> Type) O Kinds classify data constructors (e.g., Just has kind Maybe) O All of the above O None of the above O I don't know

Haskell: What is the role of Haskell's kind system? O Kinds classify values (e.g., 5 has kind Int) O Kinds constrain polymorphism (e.g., max works with any type of kind Ord) O Kinds classify type constructors (e.g., Maybe has kind Type -> Type) O Kinds classify data constructors (e.g., Just has kind Maybe) O All of the above O None of the above O I don't know

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

See similar textbooks

Similar questions

Imagine a function f in HASKELL that has the type Ord a => a -> a -> Bool, and then it's partially applied it to one numeric value. Create a function f, and also a function g that is the partially applied f.
If someone there has knowladge about Haskell can you help me and create example code like question want? QUESTION:In this assignment you are required to design a few Haskell functions that will handle specific tasks. When necessary, these functions should call other functions that you have written. In total there must be at least 12 unique functions. Over these functions you must cover as much topics of Haskell as you can. You must have a main function which should call each public function to demonstrate their correctness. In addition you should also write a short document explaining your functions and how they work. Include your code in your document.
Use haskell please, if you do not know how to do in haskell please do not post your solution. Harder Haskell programming problem: a) Write a function that takes an int parameter and returns three to the power of the int parameter (eg, if the parameter is 4, the return value is 81.) Use hat as the exponentiation operator (eg, 3 ^ 4 is 81) b) Write a function that takes one int parameter and returns the int multiplied by four (eg, for the parameter 2, the return value is 8).c) Write a function that takes a function (Int -> Int) and an Int and returns (Int, Int), where the first element is the Int without the function applied to it, and the second is the result of applying the function to the Int. For example, if you pass in the function you wrote for part a and the value 2, this function will return the tuple (2,9). d) Using map and the function you just wrote, write a function that takes a list of Ints and a function (Int -> Int) and returns a new list of tuples, with the first…
Must be in Haskell otherwise I will downvote
Please I need correct and working answers only, don't copy paste from old chegg questions. Don't waste your and my times please, thanks. Assignment 4 FUNCTIONAL PROGRAMMING WITH HASKELL Write HASKELL definitions for the following functions: 1. order a b c: returns a ternary tuple (tuple with 3 parts) of a, b and c such that the first element is less-or-equal the second, and the second is less-or-equal the third element. For example, order 4 2 3 should return (2,3,4). 2. fltr f lst: returns the list consisting of members of lst that make the function f return True when applied to it. For example, fltr even [1,2,2,5,8,4] should return [2,2,8,4]. f can be any function that takes one parameter of the same type as list elements. 3. compute lst: lst is a list of pairs of numbers, and the anwser is a list formed as follows – if the first component is smaller than the second one, then their multiplication is in the resut. Otherwise, their addition is in the result. 1. Example 1: compute…
CPS506 Lab 6 Haskell: Type classes and custom types Preamble In this lab you'll create a custom type in Haskell and make it an instance of several built-in Haskell type-classes. Getting Started The provided cabal project defines a module called Lab6. This module will define a custom type called DigitalTime. The DigitalTime type will be used to represent time as a 3-tuple of integers. One for hour, minute, and second, respectively. Thus, the type definition should look like this: data DigitalTime = DigitalTime (Int, Int, Int) Next, you will implement several type classes over this type. These type classes and their operations can be found below. Assume that the hour range is 1-12. Do not use 24h time. Type Classes to Implement Show: show DigitalTime (h, m, s) Print the time in the format "<hh:mm:ss>" Eq: (==) (DigitalTime (h1, m1, s1)) (DigitalTime (h2, m2, s2)) Two times are considered equal if they have the same hour, minute, and second values. Ord: (<=) (DigitalTime (h1, ml,…
In Haskell: Code a function "rangeProduct" that computes according to the following examples . Return 0 if the second argument is smaller than the first. What to do for negative numbers to do (if anything) is up to you. Write the program without recursion first and then write it with recursion. rangeProduct 3 5 --> 3*4*5 rangeProduct 5 3 --> 0 rangeProduct 6 12 --> 6*7*8*9*10*11*12 rangeProduct 4 4 --> 4
for Haskell: describe what the following function someFunct does someFunct p = foldr (\x xs -> if p x then x:xs else xs) []
HASKELL Please submit a single Haskell file • Please put comments in your code to show which question you are answering with each piece ofcode. • You may create auxiliary functions if you like. You may use library functions from Haskell’sstandard library. • Please limit your line lengths to 100 characters max. Please use the following two data types which you can copy-and-paste into your code. data Action = Rock | Paper | Scissors deriving (Eq, Show)data Outcome = Player1Win | Player2Win | Draw deriving Show Action represents a player’s chosen action and Outcome represents the outcome of playing a game. TASK Define a function check :: Action -> Action -> Outcome which calculates the outcome of a game where the first argument is the action of player 1 and the second argument is the action ofplayer 2.For example, check Rock Paper = Player2Win and check Paper Paper = Draw. Define a function parse :: String -> Maybe Action which will be used to parse user input for the choice…
programming paradigms Please write the following functions in Haskell. Please also write type declarations for each function, including type classes, wherever necessary. 1. Modify isGodzilla from today's lecture to isNum where the function accepts an integer as an input parameter and outputs True if this integer matches the number in the function. 2. Write a function fibList that uses the fib function from today's lecture. fibList accepts a number n as parameter and outputs a list of the numbers in the Fibonacci series up to n. Note that fibList will use a list comprehension involving fib. 3. Write a function justHighScores that takes the list generated as output of the gradeBook function and returns a list of students who score >= 95. Please use the isHighScorer function from today's lecture in justHighScores. You will also have to implement the gradeBook function discussed in class today. 4. Modify the function lastElement from today's lecture to getSecondLast. The function…
for Haskell: describe how the following function someFunc works. someFunc [] = [] someFunc (x:xs) = (length $ x : takeWhile (==x) xs, x) : someFunc (dropWhile (==x) xs)
Write a Haskell function that takes the circumference of a square as inputand computes the area of the square. Within your function you should first compute an intermediate result.