What are panics in Go and how can I handle them?

What are panics in Go and how can I handle them?

In Go, a panic is an unexpected error that occurs during the execution of a program, causing it to stop. You can handle panics using the recover function.

Can you give me an example of how to use recover?

Sure! You can use defer to call a function that uses recover to regain control after a panic. Here's a simple example:

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

What types of errors typically cause a panic?

Common causes of panics include accessing out-of-bounds array elements, dereferencing nil pointers, and using invalid type assertions.

Is it a good practice to use panics in production code?

Generally, it's better to handle errors gracefully rather than using panics in production code. Panics should be reserved for unrecoverable errors.