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 give me an example of using panic and recover?

Sure! Here's a simple example:

package main

import "fmt"

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

func main() {
    defer func() {
        if r := recover(); r != nil {
            fmt.Println("Recovered from:", r)
        }
    }()
    riskyFunction()
    fmt.Println("This will not be printed.")
}

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 be useful for debugging but may not be ideal for production.

Are there any best practices for using panic and recover?

Yes, it's best to use panic for unrecoverable errors and to limit its use. Always handle errors gracefully and avoid panicking in normal control flow.