Learning Functional Programming in Go

The Contains() method

Now, let's exercise our Contains() method:

func main() {     crv := &Car{"Honda", "CRV"}     is250 := &Car{"Lexus", "IS250"}     highlander := &Car{"Toyota", "Highlander"}     cars := Cars{crv, is250, highlander}     if cars.Contains("Highlander") {            println("Found Highlander")     }     if !cars.Contains("Hummer") {            println("Did NOT find a Hummer")     }}

The output will be as follows:

Found HighlanderDid NOT find a Hummer

In order to understand how to make the leap from imperative programming to functional programming, let's look at pure functional programming languages and how to implement high-order functions such as Map() that manipulate collections.

With pure functional types, you had a function, f, that takes a cube and returns a heart, as shown ...