Learning Functional Programming in Go

The AmHoursFn helper

We can call this handy function any time we want the list of AM hours. Note that if we create an AmHours variable to pass to our clock's functor, its value can be changed. So, this is like a slice constant of AM hours:

func AmHoursFn()  []int {   return []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}}

In real-world scenarios, we'll use functors as intended, that is, we will pass an initial slice of values in and allow each functor to transform the slice of values each time a new functor's Map function is called. In our main.go file, we want to reset the set of hours for learning purposes.