Who needs if-else chains?
And now I bring you a new series in which I show you all the little ways in which Scala can make your life a happier life.
Episode 1: I wanted to render a set of spinning number wheels, like the wheels of a slot machine. Each wheel spins for a different length of time, has a different time-offset in the animation loop, and is positioned slightly differently.
I could have done this with a giant chain of if-else statements. Instead I set up some data in an infinite stream, zipped it up, and mapped over it.
It's clean. It's concise. And more importantly it was fast to write. Beautiful.
Note: if you're curious and don't recognize it, the render loop belongs in a LibGDX app.