Go Language Recover (Recovery)

Recover is used to regain control of the program from emergency or error situations. It stops the termination sequence and returns to normal execution. It is called from a deferred function. It retrieves the error value passed through the panic call. It usually returnsnilwith no other effect.

Go recover() Example

Example

package main
import (
　　　"fmt"
)
func main() {
　　　fmt.Println(SaveDivide(10, 0))
　　　fmt.Println(SaveDivide(10,　10))
}
func SaveDivide(num1, num2　int) int {
　　　defer func() {
　　　　　　fmt.Println(recover())
　　　}()
　　　quotient := num1　/　num2
　　　return quotient
}

Output:

runtime error: integer divide by zero
0
<nil>
1