Detailed introduction to character escaping in Golang

Golang As a programming language, string is one of its important types. In Golang, we can operate some special characters by using escape characters, such as newlines, tab keys, double quotes, single quotes, etc. This article will introduce in detail the knowledge about character escaping in Golang.

1. The concept of escape characters

In Golang, escape characters are a special character sequence used to represent some specific characters or operators. An escape character begins with a backslash (\) and is followed by a specific sequence of characters or numbers. For example, \n represents a newline character, \t represents the Tab key, and \" represents a double quote.

2. Commonly used escape characters

In Golang, commonly used escape characters The meaning characters are as shown in the following table:

Escape character	Meaning
\n	Line break
\r	Enter key
\t	Tab key
\'	Single quotes
\"	Double quotes
\	Backslash

These escape characters are the most common in strings. Using these escape characters allows us to easily add some special characters to the string.

For example: fmt.Println("Hello\tWorld") will output "Hello World", where \t represents the Tab key.

3. Unicode encoded characters

In Golang, some characters may not be used directly. For example, some invisible characters or some special characters. These characters can be represented in Unicode encoding for use in strings.

Unicode encoding is a sequence of one or more hexadecimal digits. In Golang, Unicode encoding usually starts with \u followed by four numeric characters. For example, the Unicode encoding U 0041 represents the character A, which can be represented by \u0041.

Using Unicode encoding allows us to use more characters in the string, for example: fmt.Println("\u65e5\u672c\u8a9e") will output "Japanese" .

4. Primitive and non-primitive strings

In Golang, a string can be a primitive string or a non-primitive string.

A raw string starts and ends with ` followed by a single quote (') or a double quote ("). In a raw string, any character is a text character except backslash (\) and character The root character at the end of the string. In raw strings, there is no need to use escape characters.

Non-raw strings start and end with double quotes (") or backtick marks (`). In non-raw strings, escape characters must be used to represent some special characters.

For example: fmt.Println(C:\Windows\System32) will output "C:\Windows\System32", the backslash is not required Use escape characters.

5. Summary

In Golang, using escape characters allows us to conveniently represent some special characters. At the same time, Unicode encoding can also help us use some special characters in strings. Using primitive and non-primitive strings, some special characters can also be represented.

The above is the relevant knowledge about Golang character escaping, I hope it can help you.

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