Learning Functional Programming in Go

The final HOF example

Our final HOF example is a doozy. We generate 14 cars, filter ByDomestic, map them with an Upgrade function, filter them by ByHasNumber, and reduce them to a collection of JSON strings:

PrintCars("GenerateCars(1, 14), Domestic, Numeric, JSON",       cars.GenerateCars(1, 14).              Filter(ByDomestic()).              Map(Upgrade()).              Filter(ByHasNumber()).              Reduce(JsonReducer(cars), Collection{}))

The output of this is as follows:

GenerateCars(1, 14), Domestic, Numeric, JSON-----------------------car: {"car": {"make": "Ford", "model": " F-150 XL"}}car: {"car": {"make": "GM", "model": " Hummer H2 X"}}car: {"car": {"make": "GM", "model": " Hummer H3 X"}}

That's six lines of code. How many lines of code do you think it would take to do this using an ...