Full analysis of Go language file renaming operation
Apr 08, 2024 pm 03:30 PM
The os.Rename function is used in Go language to rename files. The syntax is: func Rename(oldpath, newpath string) error. This function renames the file specified by oldpath to the file specified by newpath. Examples include simple renaming, moving files to different directories, and ignoring error handling. The Rename function performs an atomic operation and may only update directory entries when the two files are in the same directory, renames may fail across volumes or while a file is in use.
Full analysis of Go language file renaming operation
In file management tasks, renaming files is a common operation. The Go language provides a flexible way to rename files, and this article will delve into its syntax, usage, and practical examples.
Syntax
The syntax for file renaming in Go language is as follows:
func Rename(oldpath, newpath string) error
Among them:
oldpath: The path of the original filenewpath: The path of the renamed fileerror: Returned if the rename fails Error, otherwisenil
##Usage
##Rename The function will oldpath The specified file is renamed to the file specified by newpath. An error is returned if oldpath does not exist or if newpath already exists.
Example 1: Simple rename
package main
import (
"fmt"
"os"
)
func main() {
err := os.Rename("old_file.txt", "new_file.txt")
if err != nil {
fmt.Println(err)
}
}
package main
import (
"fmt"
"os"
)
func main() {
err := os.Rename("old_file.txt", "/other_directory/new_file.txt")
if err != nil {
fmt.Println(err)
}
}
The above is the detailed content of Full analysis of Go language file renaming operation. For more information, please follow other related articles on the PHP Chinese website!package main
import "os"
func main() {
_ = os.Rename("old_file.txt", "new_file.txt") // 忽略錯誤
}Note:Rename
If both files are in the same directory, the file system may optimize the rename operation by simply updating the directory entry without actually moving the files.
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