Safely Handling Arbitrary Data

We have a utility that processes its command-line arguments; if everything goes as expected, then we get the supported types of command-line arguments, and everything goes smoothly. But what happens when something unexpected occurs? In that case, the map[string]interface{} map is here to help, and this lesson shows how!

Rationale for map[string]interface{}

Remember that the biggest advantage we get from using a map[string]interface{} map, or any map that stores an interface{} value, in general, is that we still have our data in its original state and data type. If we use map[string]string instead, or anything similar, then any data we have is going to be converted into a string, which means that we are going to lose information about the ...