How can I handle panic and recover in Go?

How can I handle panic and recover in Go?

In Go, you can use the recover function to regain control of a panicking goroutine. You typically call recover within a deferred function.

Can you show me a code example?

Sure! Here's a simple example:

package main

import "fmt"

func riskyFunction() {
    panic("Something went wrong!")
}

func safeFunction() {
    defer func() {
        if r := recover(); r != nil {
            fmt.Println("Recovered from:", r)
        }
    }()
    riskyFunction()
}

func main() {
    safeFunction()
}

What happens if I don't use recover?

If you don't use recover, the program will terminate and print a stack trace, which can lead to a crash.

Are there any best practices for using panic and recover?

Yes, it's best to use panic for unrecoverable errors and to limit the use of recover to specific cases where you can handle the error gracefully.