Write a function foldl (also called reduce) with type:foldl: ('a * 'b -> 'b)-> 'b ->'a list -> 'bThe type ('a * 'b -> 'a) is the type of the input function (say f), 'b is the type of an initial value,and 'a list is the type of the input list.foldl(f,init, [x1,...xn])returnsf (xn,...,f(x2, f(x1,init))...)For example, we have:- fun plus (x,y) = x + y + 0foldl (plus, 0, [1,2,3,4]) ;val it = 10 : intfun foldl (f: 'a*'b->'b) (init: 'b) (1: 'a list): 'b =case 1 of

It is defined as a block of organized, reusable code that is used to perform a single, related…

Write a function foldl (also called reduce) with type: foldl: ('a * 'b -> 'b) -> 'b -> 'a list -> 'b The type (’a * 'b -> 'a) is the type of the input function (say f), ’b is the type of an initial nd 'a list is the type of the input list. foldl(f,init, [x1,...xn]) eturns f (xn,...,f(x2, f(x1,init))...)

Write a function foldl (also called reduce) with type: foldl: ('a * 'b -> 'b) -> 'b -> 'a list -> 'b The type (’a * 'b -> 'a) is the type of the input function (say f), ’b is the type of an initial nd 'a list is the type of the input list. foldl(f,init, [x1,...xn]) eturns f (xn,...,f(x2, f(x1,init))...)

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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