A closer look at Golang escape characters: 5 key takeaways

Detailed explanation of Golang escape characters: 5 key points you must know

When using the Golang programming language, we often involve the use of escape characters. The escape character is a special character used to express some special meanings, such as newline characters, tab characters, etc. It is very important to understand and master the escape characters in Golang, which can help us better handle string and character operations. In this article, we will introduce 5 key points you must know about Golang escape characters and give specific code examples to help you understand better.

1. The concept of escape characters

The escape character is a special sequence of characters, starting with a backslash (), followed by a character. Represents some special meaning. In Golang, common escape characters include: `
(newline character), (tab character), ' (single quote), "` (double quotes), etc. By using escape characters, we can represent some special characters and control characters in the string.

Sample code:

package main

import "fmt"

func main() {
    fmt.Println("Hello
World")  // 使用
表示换行符
    fmt.Println("Hello    World")  // 使用    表示制表符
    fmt.Println("I'm a programmer")  // 使用'表示单引号
    fmt.Println("She said: "Hello!"")  // 使用"表示双引号
}

2. Raw string literals

Golang also provides the syntax of raw string literals, represented by backticks (`), escaping in raw string literals characters will not take effect. This feature can be used to process strings containing a large number of special characters and escape characters to avoid the trouble of repeatedly using escape characters.

Sample code:

package main

import "fmt"

func main() {
    fmt.Println(`Hello
World`)  // 原始字符串字面量，
不会生效
}

3. Unicode escape characters

In addition to common escape characters, Golang also supports Unicode escape characters through u and U to represent. Unicode escape characters can represent any Unicode characters and are suitable for processing strings containing Unicode characters.

Sample code:

package main

import "fmt"

func main() {
    fmt.Println("u4F60u597D")  // 输出：你好
}

4. Special escape characters

In Golang, in addition to common escape characters, there are also some special escape characters, such as ` (carriage return character), (backspace character), ` (form feed character), etc. These special escape characters have special effects in specific scenarios and need to be used according to actual needs.

Sample code:

package main

import "fmt"

func main() {
    fmt.Println("HelloWorld")  // 使用表示回车符
    fmt.Println("Backspace")  // 使用表示退格符
    fmt.Println("Pagebreak")  // 使用表示换页符
}

5. Combination use of escape characters

In actual development, we may need to combine multiple Use a combination of escape characters to meet complex string processing requirements. Golang supports the use of escape characters in any combination in a string to achieve the desired effect.

Sample code:

package main

import "fmt"

func main() {
    fmt.Println("Hello        World")  // 使用两个    表示两个制表符
    fmt.Println("My name is "Tom"
I'm a programmer")  // 多种转义字符组合使用
}

Summary:

Through the introduction of this article, we understand the concept and common usage of escape characters in Golang, including common escape characters, original string literals, and Unicode escapes Characters, special escape characters and the combination of escape characters. Mastering this knowledge can help us better handle string and character operations and improve our programming capabilities and efficiency. I hope this article can be helpful to you, if so If you have any questions or need further discussion, please leave a message for discussion.

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