What is the necessity of using the recover function inside defer in Go?

In Go, the recover function is used to catch a panic (panic) and prevent the program from crashing. However, recover only works if 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 might cause a panic
    panic("something went wrong")
}

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