Golang panic recover example
This is a Panic and Recover example that handles an error that occurs during the execution of a program. We have used the recover function to prevent the termination of the program and recovers the program from panic.
In this example, r := recover() is used to detect any occurrence of panic in the program and assign the panic message to r.
Example
package main
import (
"errors"
"fmt"
)
var result = 1
func chain(n int) {
defer func() {
if r := recover(); r != nil {
fmt.Println(r)
}
}()
if n == 0 {
panic(errors.New("Cannot multiply a number by zero"))
} else {
result *= n
fmt.Println("Output: ", result)
}
}
func main() {
chain(5)
chain(2)
chain(0)
chain(8)
}
Output: 5
Output: 10
Cannot multiply a number by zero
Output: 80