Learning Functional Programming in Go

Interface-driven development

Recall the following quote from Chapter 4, SOLID Design in Go?

"It makes sense to categorize a thing by its abilities, because everything is defined by its actions."

Since this is a book about functional programming, now would be a good time to mention that a major benefit of using interfaces is that they allow us to group our application's functions in order to model real-life behaviors.  

In the previous chapter, we modeled the behavior of a duck:

type StrokeBehavior interface {       PaddleFoot(strokeSupply *int)}type EatBehavior interface {       EatBug(strokeSupply *int)}

In this chapter, we will look at manipulating files in the Google Cloud Platform (GCP). Our interface defines the four behaviors of interest:

type ...