SOLID Development Slides + Code

Great talk on Monday. SOLID is hard to fit into an hour. You could almost do an entire hour on every aspect, except maybe Liskov.

Something I would stress more, even though you probably could never stress it enough is how this enables testing. I would ask people “How many people feel unit testing adds value?”. While their hands were up, I would ask “…adds A LOT of value and confidence?” ….with their hands still up ” How many people actually write unit tests?”. You’ll get 3 or 4. When asked why, people will say it’s hard to test, there’s no time, etc.

I would argue, you can’t write good unit tests unless you’re SOLID. You can’t isolate the class you want to test and avoid the nasty integration tests all the way to the database if you’re newing up all your dependencies inline and have methods that do a thousand different things.

You HAVE to be SOLID in order to write tests.

SRP, O/C, IoC are foundations for every aspect of amazing code; modularity, extensibility, re-usability.

Great talk. I always love it when there isn’t a single bullet point in the entire slide deck!

That’s something I’ve always wanted to do, but the thought of it terrifies me…for now.