Learning Functional Programming in Go

Iterating over a collection of cars

First, let's create a Car struct that we can use to define the Cars collection as a slice of Car. Later, we'll create a Contains() method to try out on our collection:

package maintype Car struct {     Make string     Model string}type Cars []*Car

Here's our Contains() implementation. Contains() is a method for Cars. It takes a modelName string, for example, Highlander, and returns true if it was found in the slice of Cars:

func (cars Cars) Contains(modelName string) bool {     for _, a := range cars {            if a.Model == modelName {                   return true            }     }     return false}

This seems simple enough to implement, but what happens when we are given a list of boats or boxes to iterate over? That's right, we'll have to reimplement the ...