How to resolve the algorithm Strip whitespace from a string/Top and tail step by step in the Racket programming language

Published on 12 May 2024 09:40 PM
#Racket

How to resolve the algorithm Strip whitespace from a string/Top and tail step by step in the Racket programming language

Table of Contents

Problem Statement

Demonstrate how to strip leading and trailing whitespace from a string. The solution should demonstrate how to achieve the following three results:

For the purposes of this task whitespace includes non printable characters such as the space character, the tab character, and other such characters that have no corresponding graphical representation.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Strip whitespace from a string/Top and tail step by step in the Racket programming language

Source code in the racket programming language

#lang racket

;; Using Racket's `string-trim'

(define str "  \n\t foo  bar   \r\n  ")

;; both sides:
(string-trim str) ; -> "foo  bar"

;; one side:
(string-trim str #:right? #f) ; -> "foo  bar   \r\n  "
(string-trim str #:left? #f)  ; -> "  \n\t foo  bar"

;; can also normalize spaces:
(string-normalize-spaces (string-trim str)) ; -> "foo bar"

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