As in many other languages even in Go the map is a very frequently used data-type used for a broad variety of purposes. For many of the use-cases you need access to a map’s keys.

Constants are basically variables whose value can’t change and they are helping us to write safer and cleaner code. But exists something like constant arrays in Go?

In some cases it is helpful to know wether the struct you are working with is empty or not. But sometimes things are not as simple as one might think.