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Golang os.IsExist() Function with Examples

Golang | os.IsExist() Function: Here, we are going to learn about the IsExist() function of the os package with its usages, syntax, and examples.
Submitted by IncludeHelp, on November 23, 2021

os.IsExist()

In the Go language, the os package provides a platform-independent interface to operating system (Unix-like) functionality. The IsExist() function is an inbuilt function of the os package, it is used to check whether the given error is known to report that a file or directory already exists. The IsExist() function is satisfied by ErrExist as well as some syscall errors. This function predates errors.Is.

It accepts one parameter (err error) and returns a boolean indicating whether the error is known to report that a file or directory already exists.

Syntax:

func IsExist(err error) bool

Parameter(s):

• err - Error

Return Value:

The return type of the os.IsExist() function is a bool, it returns a boolean indicating whether the error is known to report that a file or directory already exists.

Example:

// Golang program to demonstrate the
// example of IsExist() function

package main

import (
	"fmt"
	"os"
)

func main() {
	_, err := os.Stat("/path/to/file")
	fmt.Println("err:", err)
	
	x := os.IsExist(err)
	fmt.Println("x:", x)
}

Output:

err: stat /path/to/file: no such file or directory
x: false

Golang os Package »

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