What is a variadic function?

A variadic function is a function that can accept a variable number of arguments. This allows the function to be called with different numbers of parameters without needing to define multiple versions of the function. In programming languages like Go and JavaScript, variadic functions can be defined to handle an arbitrary number of inputs.

For example, in Go, you can define a variadic function like this:

func max(nums ...int) int {
    maxVal := nums[0]
    for _, num := range nums {
        if num > maxVal {
            maxVal = num
        }
    }
    return maxVal
}

In this example, the max function can take any number of integer arguments and returns the maximum value among them.