Detailed introduction to escape characters in Golang

Golang is a powerful programming language that is efficient, concise, and safe, making it highly applicable in various fields. In these fields, Golang can be used to develop various types of applications: network applications, embedded systems, cloud computing, artificial intelligence, etc. Although Powerful Golang has many benefits, some Golang features are difficult to understand, including escape characters in Golang. This article will introduce the escape characters in Golang in detail to enable readers to better understand and use the language.

Escape characters in Golang

Escape characters in Golang are used to use some special characters in strings that usually cannot be entered through the keyboard. For experienced programmers, familiar escape characters may include "\n", "\t", "\r", "\f", etc. These escape characters can be used to represent special characters such as line feeds, tabs, and carriage returns.

Golang also uses backslash () to identify escape characters. When using escape characters, we need to put the backslash and the character that needs to be escaped together, for example: "\t", which represents a tab character.

In addition to regular escape characters, Golang also supports some other escape characters, as follows:

1, \a: bell character (ASCII code 7)

2, \b: backspace character (ASCII code 8)

3, \f: form feed character (ASCII code 12)

4, \n: line feed character (ASCII code 10)

5, \r: carriage return (ASCII code 13)

6, \t: tab character (ASCII code 9)

7, \v : vertical tab character (ASCII code 11)

8, \: backslash

9, \': single quote

10, \": double quote

11. \xhh: Hexadecimal character (hh represents two hexadecimal digits)

12. \uhhhh: Unicode character (hhhh represents 4 hexadecimal characters) )

Use of escape characters

In Golang, escape characters can be used in strings, characters, and template strings. Here are some examples of using escape characters:

String

In Golang, strings can be represented by double quotes or backticks. Strings in double quotes can contain any type of characters, including escape characters. For example, the following code Demonstrates how to use escape characters in strings.

package main

import "fmt"

func main() {
    fmt.Println("Hello World!\nNice to meet you.")
}

The output is:

Hello World!
Nice to meet you.

In the above program, we use the escape character "\n" to represent the newline character .

Characters

Characters in Golang are enclosed in single quotes and can be represented by escape characters. For example:

func main() {
    fmt.Println('\'')  // 输出单引号
}

The running result is: '
Above In the code, we use the escape character "\'" to output a single quote.

Template string

In Golang, we can use backticks to represent template strings. Template characters The string can contain any type of characters, including escape characters. For example:

package main

import "fmt"

func main() {
    text := `Hello,
    World!\n`
    fmt.Println(text)
}

The running result is:

Hello,
    World!\n

In the above program, we used the escape character "\n" To represent a newline character.

Summary

In Golang, escape characters are used to represent some special characters in strings and characters that usually cannot be entered directly. Common in Golang Escape characters include "\n", "\t", "\r", "\f", etc., and some other escape characters, such as: "\a", "\b", "\v" " and so on, these escape characters can be used in strings, characters, and template strings. Understanding and correctly using escape characters in Golang is one of the keys to writing elegant and efficient code.

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