Fill in the skeleton given for pipe which uses foldl' to get a function pipe :: [(a -> a)] →> (a -> a) such that pipe [f1,...,fn] x (where f1,..., fn are functions!) should return f1(f2(...(fn x))). Again, your task is to fill in the appropriate values for 1. the step function f and 2. the base cas base. Once you have implemented the function, you should get the following behavior: ghci> pipe [] 3 3 ghci> pipe [(\x -> x+x), (\x -> x + 3)] 3 12 ghci> pipe [(\x -> x * 4), (\x -> x + x)] 3 24

Fill in the skeleton given for pipe which uses foldl' to get a function pipe :: [(a -> a)] →> (a -> a) such that pipe [f1,...,fn] x (where f1,..., fn are functions!) should return f1(f2(...(fn x))). Again, your task is to fill in the appropriate values for 1. the step function f and 2. the base cas base. Once you have implemented the function, you should get the following behavior: ghci> pipe [] 3 3 ghci> pipe [(\x -> x+x), (\x -> x + 3)] 3 12 ghci> pipe [(\x -> x * 4), (\x -> x + x)] 3 24

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

Related questions

Q: Write a function solver that takes a non-negative integer upper_bound as an argument, and prints…

A: Step-1: Define a helper function is_perfect_square(n) Step-1.1: Compute the square root of n…

Q: Given main() and GVCoin struct, complete function ConsecutiveHeads() in main.c that counts and…

A: Coded using C language.

Q: 1. Write a function called hwd_problem1 that takes two inputs: a vector v and a positive integer…

A: Below i have given program in c:

Q: Q)You are given R function below: TestFunction <- function(df){ M <- rep(0,ncol(df)) for(i in…

A: There are 2 functions in the given code: 1. TestFunction 2. colMax TestFunction takes the argument…

Q: Please answer both questions.

A: The question has been answered in step2

Q: Write a function def identical(a, b) that checks whether two tuples have the same elements in any…

A: Here is the approach : First we have to take the two tuple as the input parameters to the function…

Q: Subtask I: Now that you can represent cards, you'll attempt to represent poker hands. Poker is one…

A: I have given the full classes with functions so it will be easier to understand and have also added…

Q: You are given a list of integers nums and a positive integer k. Your task is to implement a function…

A: HI THEREI AM ADDING ANSWER BELOWPLEASE GO THROUGH ITTHANK YOU

Q: a function public ABList both(ABList listOne, ABList listTwo)that creates and returns an ABList…

A: It is defined as a group of statements that together perform a task. You can divide up your code…

Q: Im having trouble with this Lab for my computer science class. Define a function named SortVector…

A: The given code defines a function named "SortVector" that takes a vector of integers as a parameter.…

Q: Below is a Python function definition for a linear search of a list Ist for element. It returns the…

A: Answer:

Q: Write a function longest_streak(string, char) that receives as parameters a strings and a character…

A: If same character is found start comparing all the latter values till new character is arrived…

Q: You are given a singly linked list. Write a function to find if the linked list contains a cycle or…

A: The problem is asking to determine if a given singly linked list contains a cycle or not. A cycle in…

Q: The question is in bold and the rest is there for support , to explain concepts Write a function…

A: Step 1 : STARTStep 2 : Implement the function triple_riffle(mylist)Step 3 : Implement the function…

Q: lop a function that finds the starting index of the longest subsequence of values that is strictly…

A: In this response, we will implement three Python functions that perform distinct tasks, focusing on…

Q: Make a function called choose with two parameters n and k, that implements the above formula.

A: C++ Code for above : // helper function int cal(int n){ int temp = 1; for (int i = 2; i…

Q: This is ML. Need help with code through SOML. And working with java (6p) Function max3 of type int…

A: CODE:- The largest of three integers. public class LargestNumberExample3 { public static void…

Q: We can transform multiple-argument functions into a chain of single-argument, higher order functions…

A: Coded using Python 3.

Question

48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
| `pipe [f1,..., fn] x` should return `f1 (f2(... (fn x)))`
>>> pipe [] 3
3
>>> pipe [(x −> x+x), (\x -> x + 3)] 3
12
>>> pipe [(\x -> x * 4), (\x -> x + x)] 3
24
pipe: [(a -> a)] -> (a -> a)
pipe fs
= foldLeft f base fs
where
f a x = error "TBD: pipe: f"
base = error "TBD: pipe: base"

Fill in the skeleton given for pipe which uses foldl' to get a function
pipe :: [(a -> a)] -> (a -> a)
such that pipe [f1,...,fn] x (where f1,..., fn are functions!) should return
f1(f2(...(fn x))) .
Again, your task is to fill in the appropriate values for
1. the step function f and
2. the base case base.
Once you have implemented the function, you should get the following behavior:
ghci pipe [] 3
3
ghci> pipe [(\x −> x+x), (\x −> x + 3)] 3
12
ghci> pipe [(\x -> x * 4), (\x -> x + x)] 3
24
0₁

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Algorithm of the program:

VIEW

Step 2: Source code of the program:

VIEW

Step 3: Screenshot of the program:

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

Remains code. Implement regular expression matching with support for '.' and '*'. '.' Matches any single character.'*' Matches zero or more of the preceding element. The matching should cover the entire input string (not partial). The function prototype should be:bool is_match(const char *s, const char *p) Some examples:is_match("aa","a") → falseis_match("aa","aa") → trueis_match("aaa","aa") → falseis_match("aa", "a*") → trueis_match("aa", ".*") → trueis_match("ab", ".*") → trueis_match("aab", "c*a*b") → true""" def is_match(str_a, str_b): """Finds if `str_a` matches `str_b` Keyword arguments: str_a -- string str_b -- string """ len_a, len_b = len(str_a) + 1, len(str_b) + 1 matches = [[False] * len_b for _ in range(len_a)] # Match empty string with empty pattern matches[0][0] = True # Match empty string with .* for i, element in enumerate(str_b[1:], 2): matches[0][i] = matches[0][i - 2] and element == '*' for i, char_a in…
Please write a function PythQuad(n) in python that generates a list of pythagorean quadruples (x,y,z,w) such that x <= y <= z <= w < n. A pythagorean quadruple states that x^2 + y^2 + z^2 = w^2. Please do not use a triply nested loop, use the properties of a pythagorean quadruple to write the function.
Change two lines of code of: def solution(A, K): n = len(A) for i in range(n - 1): if (A[i] + 1 < A[i + 1]): return False if (A[0] != 1 and A[n - 1] != K): return False else: return True SO that it solves the question : you are given a implementation of a function def solution (A,K) This function, given a non-empty array A of N integers (sorted in non-decreasing order) and integer K, checks whether A contains numbers 1,2..K (every numbers from 1 to K at least once and no other numbers (for example given array A, K=3 ; A(0)=1, A(1)=1, A(2)=2, A(3)=3, A(4)=3 then the function should return True while for the following array A, K=2; A(0)=1, A(1)=1, A(2)=3 then the function should return False.) Assume that: -N and K are integers within the range (1....300,000) -each element of array A is an integer within the range (0...1,000,000,000) -array A is sorted in non-decreasing order
Using DrRacket Curry Returns a partially applied function. > ((curry + 10) 20) 30 curryr can be used when the arguments need to be inserted at the end. In other words, (curryr list 1 2) will produce a function expecting some new-arguments .... When called, that new function will in turn call (list new-arguments ... 1 2). > (((curryr list) 1 2) 3 4) '(3 4 1 2) > ((curryr list 1 2) 3 4) '(3 4 1 2) > ((curryr - 30) 40) 10 > (((curryr -) 30 40)) 10 my-curry: implement your own version of curry. Your version should behave identically to curry, but need only work on procedures with fixed arity. E.g., > ((my-curry even?) 2) #t > (((my-curry cons) 1) 2) '(1 . 2) > ((my-curry cons 1) 2) '(1 . 2)
Write a function lis_rec(arr) that outputs the length of the longest increasing sequence and the actual longest increasing sequence. This function should use divide and conquer strategy to the solve the problem, by using an auxiliary function that is recursive. For example, one possibility is to define a recursive function, lis_rec(arr, i, prev), that takes the array arr, an index i, and the previous element index prev of LIS (which is part of the array arr before index i), and returns the length of the LIS that can be obtained by considering the subarray arr[i:]. Write a dynamic programming version ofthe function, lis_dp(arr), that outputs the length of the longest increasing sequence and the actual longest increasing sequence by using a table to store the results of subproblems in a bottom-up manner. Test the performance of the two functions on arrays of length n = 100, 500, 1000, 5000, 10000. Compare the running times and memory usage of the two functions.
Hi, I got stuck with this problem. The problem I got when I compile is the word "mississippi"
Using informal arguments: Write a function polynomial which implements a polynomial function of arbitrary integer order ?: ?(?)=?0+?1?+?2?2+⋯+???? The function should take ? as a formal argument and the constants {??} as informal arguments. You will have to use the *args function argument. The enumerate builtin function will also be convenient in order to get the power ? to go along with each ??. Recall, you can index tuples just like arrays by using [ ]. Test your function by plotting: ?(?)=1+2?2 over the range (-3,3).
I need correct answer unique answer for this. Don't copy from anywhere otherwise I'll report your account for sure. Last time I received wrong answer for this. This time i need right answer. Do not send wrong and plagiarism response
Do the part b of the attached question thanks