Chapter 1. Dependency injection: what's all the hype?

"We all agree that your theory is crazy, but is it crazy enough?"

—Niels Bohr

So you're an expert on dependency injection (DI); you know it and use it every day. It's like your morning commute—you sleepwalk through it, making all the right left turns (and the occasional wrong right turns before quickly correcting) until you're comfortably sitting behind your desk at work. Or you've heard of DI and Inversion of Control (IoC) and read the occasional article, in which case this is your first commute to work on a new job and you're waiting at the station, with a strong suspicion you are about to get on the wrong train and an even stronger suspicion you're on the wrong platform.

Or you're somewhere ...

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