In this installment of Programming By Stealth, Bart Busschots finishes firming up our foundation on a few more things before we meet Jest, which will be the Test Driven Development (TDD) environment we’ll be learning next time.
He explains in some adorable examples involving a parrot (named Polly of course) how getters can be used to construct short but powerful syntaxes that seem quite counterintuitive at first glance. These are heavily used by Jest, and without learning about them, they would simply look like magic. He said some purists may see this syntax as an abuse of getters but it’s a pretty slick method that yields very readable APIs.
The second thing he teaches us is that functions can actually return functions. That sounds like opening a hole in the space-time continuum but it’s actually quite logical and useful as Bart explains the usefulness of this really well. No parrots involved, but lots of pancakes and waffles in his examples.
You can find Bart’s fabulous tutorial shownotes at pbs.bartificer.net.