Use the path/filepath.Split function to split the path into directory and file name parts

Use the path/filepath.Split function to split the path into two parts: directory and file name

When developing programs or processing files, it is often necessary to split the path into two parts: directory and file name. . In Go language, you can use the Split function in the path/filepath package to achieve this function. This article will introduce the usage of the Split function and give code examples.

The definition of the Split function is as follows:
func Split(path string) (dir, file string)

Among them, path is the path string to be split, and dir is the directory part. file is the file name part.

Code example:

package main

import (

"fmt"
"path/filepath"

)

func main() {

path := "/home/user/test.txt"
dir, file := filepath.Split(path)
fmt.Println("目录: ", dir)
fmt.Println("文件名: ", file)

}

The output result is:
Directory: /home/user/
File name: test.txt

In the above code, we first imported "fmt" and "path/filepath" two packages. Next, in the main function, we define a path string path, which is "/home/user/test.txt". Then, we called the filepath.Split function and passed in the path string path as a parameter. The two values ​​returned by the function are assigned to the dir and file variables respectively.

Finally, we used the fmt.Println function to print the results of the directory and file name respectively. Since the return value type of the Split function is a string, we can directly use the print function to print it out.

The execution results of the above code are "/home/user/" and "test.txt". As you can see, the Split function splits the path string into two parts: directory and file name, making it easier for us to perform subsequent operations on them.

It should be noted that if there is no directory part in the path string, the returned dir will be an empty string. If the path string points to a directory rather than a file, the returned file is an empty string.

In addition to the Split function, the path/filepath package also provides some other useful functions, such as the Join function for splicing multiple path fragments into a complete path, and the Clean function for cleaning up redundant paths in path strings. The rest wait.

Summary:
This article introduces how to use the Split function in the path/filepath package in the Go language to split the path into two parts: the directory and the file name. Through the explanation of the sample code, we understand the usage of the Split function and master how to use this function in actual development. I hope this article helps you when dealing with file paths.

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