golang print ignore escaping

Go is an increasingly popular programming language in recent years. Its simplicity, efficiency, and ease of use have been sought after by more and more developers. When using Go, we often encounter situations where we need to print strings that contain escape characters. How to correctly output these strings? This article will introduce the relevant content of golang printing ignoring escaping.

1. Escape characters

In Go language, we can use backslash () to represent escape characters. Generally speaking, escape characters are expressed in the form of plus one character. Some common escape characters are as follows:

   | 换行符                                      |

| | Form feed character|
| | Backspace character|
| | Bell character|
| | vertical tab (vertical tab) |
| |
| Uhhhhhh | Represents a character whose Unicode code value is hexadecimal hhhhhh |
| ooo | Represents a character whose ASCII code value is octal ooo |
|

 | Windows风格的换行符（等同于加上

When printing a string, you often encounter situations where you need to use escape characters. For example:

fmt.Println("Hello,    Go!") // 输出：Hello,   Go!
fmt.Println("Hello,
Go!") // 输出：
                            // Hello,
                            // Go!
fmt.Println("Hello,"Go"!") // Hello,"Go"!

2. Original string

If there are a large number of escape characters in the string, it is easy to make the code lengthy and difficult to maintain. The Go language provides a raw string method that can output strings directly without using escape characters. The original string is enclosed in backticks (`), and all characters inside it will be output in the original format, including spaces, newlines, Tab keys, etc. For example:

fmt.Println(`Hello,   Go!
My name is "Alice"`) 
// 输出：Hello,   Go!
// My name is "Alice"

This method can easily output strings containing a large number of escape characters or strings that need to be displayed on multiple lines. But it should be noted that the original string cannot be wrapped, otherwise it will cause compilation errors.

3. Ignore escaping

Sometimes we don’t want to use the original string to output the string, but we don’t want to use escape characters. At this time, we can use the following method to ignore the escape The effect of escaping:

fmt.Println("Hello,\nGo!")
// 输出：Hello,
Go!

Use "\" to escape the backslash in the escape character to achieve the effect of ignoring the escape. At the same time, we can also use string replacement to ignore escaping. The code is as follows:

import "strings"
…
str := "Hello,
Go!"
str = strings.Replace(str, "
", "\n", -1)
fmt.Println(str)
// 输出：Hello,
Go!

This method can quickly convert escape characters into string output, and can also improve the readability and maintainability of the code.

4. Summary

In the Go language, when we need to print out a string containing escape characters, we can use the original string, ignore escapes and other methods to achieve this. At the same time, please note that when using escape characters, do not use them incorrectly or omitly, otherwise it will cause code errors. In actual development, multiple methods can be used in combination to choose the most appropriate method to output strings according to the actual situation.

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