How do you Identify Special Characters in Strings in Golang?

Mary-Kate Olsen
Release: 2024-10-31 20:31:01
Original
353 people have browsed it

How do you Identify Special Characters in Strings in Golang?

Identifying Special Characters in Strings in Golang

In GoLang, checking for special characters within a string requires specific methods. When encountering a string obtained from user input, ensuring its validity often necessitates verifying the absence of malicious or undesirable characters. This article explores two approaches to detect special characters in strings.

Method 1: Using strings.ContainsAny()

The strings.ContainsAny() function determines whether a string contains any character from a provided set of characters. To check for special characters, pass the string and a special character set to the function. For instance:

<code class="go">package main

import "strings"

func main() {
    fmt.Println(strings.ContainsAny("Hello World", ",|"))  // false
    fmt.Println(strings.ContainsAny("Hello, World", ",|")) // true
    fmt.Println(strings.ContainsAny("Hello|World", ",|"))  // true
}</code>
Copy after login

Method 2: Using strings.IndexFunc()

For checking if a string contains non-ASCII characters, strings.IndexFunc() proves useful. It returns the index of the first character that satisfies a provided function. Pass a function that checks if the character is outside the ASCII character range:

<code class="go">package main

import (
    "fmt"
    "strings"
)

func main() {
    f := func(r rune) bool {
        return r < 'A' || r > 'z'
    }
    if strings.IndexFunc("HelloWorld", f) != -1 {
        fmt.Println("Found special char") // false
    }
    if strings.IndexFunc("Hello World", f) != -1 {
        fmt.Println("Found special char") // true
    }
}</code>
Copy after login

The above is the detailed content of How do you Identify Special Characters in Strings in Golang?. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!