Scala in Action

Foreword

You’re standing in front of a huge, steep wall of rock. Your neck is straining as you bend your head back as far as it will go to take it all in. If you squint, you can barely see something moving around at the top. There’s probably some really good stuff up there. You’ve heard from people you trust that it’s worth climbing this wall. But, you’re damned sure going to hurt yourself on the way up. You can already see some of the jagged edges jutting out. And what if it turns out that you don’t like what you see when you get there?

Learning difficult things is like this—and make no mistake: Scala is difficult to learn. And you may very well not like what you see when you get to the top. I’d guess that only a small fraction of developers ...