Answered: emacs/lisp function Write a function…

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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emacs/lisp function

Write a function in Lisp that takes one parameter which we can assume to be a list. The function should print all the elements of the list using the function princ and a space between them. Use the function mapc for this purpose.Show a few examples of testing this function. Show one example using the function apply and one using the function funcall.

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Explanation

1) Below is LISP program that defines a function that takes one list parameter and print all the elements of the list using the function princ and a space between them.

It first defines defines a new function called print-list that takes a single parameter, lst, which is a list.
- It then uses the mapc function to apply a lambda function to each element of the list, which prints the element using the princ function and a space using another princ function call.
- Add a new line after list is printed using terpri
Then there a few examples of testing this function and display the list to console
- using normal function call
- using the function apply
- using the function funcall

2) Save this program in lsp file and run

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