What are variadic functions in Go?

What are variadic functions in Go?

Variadic functions in Go are functions that can accept a variable number of arguments. They are defined using an ellipsis (...) before the type.

Can you give me an example of a variadic function?

Sure! Here's a simple example:

func sum(numbers ...int) int {
    total := 0
    for _, number := range numbers {
        total += number
    }
    return total
}

You can call it like this: sum(1, 2, 3, 4).

How do I handle different types of arguments in a variadic function?

In Go, you can only have one variadic parameter, and it must be the last parameter. If you want to handle different types, you can use an interface{} type, but you'll need to use type assertions inside the function.

Are there any limitations to using variadic functions?

Yes, one limitation is that you can only have one variadic parameter in a function, and it must be the last parameter. Also, using interfaces can lead to type safety issues.