Mis on vajadus kasutada recover funktsiooni defer sees Go-s?

In Go, the recover function is used to catch panic and prevent the program from crashing unexpectedly. However, recover only works if it is called inside a deferred function (defer).

Using recover inside defer allows:

• Safely handling a panic, for example, logging the error or cleaning up resources.
• Continuing program execution after a panic, if possible.

Example:

func safeFunction() {
    defer func() {
        if r := recover(); r != nil {
            fmt.Println("Recovered from panic:", r)
        }
    }()
    // Code that may cause panic
    panic("something went wrong")
}

If recover is called outside of defer, it will not catch the panic, and the program will terminate unexpectedly. Therefore, recover should always be placed inside defer for proper exception handling.