How does one exit Vim “Ex” mode? But first… how did you even get into “Ex” mode?

A stumbling block for many people when debugging is reading the stack trace. Today I’d like to discuss this important skill.

Ruby’s RSpec describe block has two common syntaxes. Which should you use?

When building a demo application, I believe you can often skip authentication.

I remember the first bug that I shipped to production. I was upset that I’d broken something and was anxious to fix it. But I noticed something curious: the calm demeanor of a senior mentor helping me. They refused to meet my intensity. While the world burned, they wanted to instead discuss the bug and its relative importance.

You were stuck, and now you aren’t. Congratulations! Before you move on, it’s vital to stop and learn from it. It’s the best way I know to get better and spare your mind for increasingly harder problems.

Names in software are hard. But what’s worse than a bad name? Sticking with it because you can’t change it. I want us all to be able to effortlessly and fearlessly fix bad names, and that’s the topic of this post.

Have you ever tried to read the documentation for a Postgres command? Although many consider Postgres’ docs best-in-class, they include conventions that might challenge newbies. In this post, I’ll paraphrase Postgres’ conventions page to help us understand what the documentation for a command is saying.

If I could give one piece of advice to anyone learning to program: build.

This advice might be most helpful to beginners. But it’s been valuable to me to revisit at different points in my career. In some ways, this post is for me.

Steve Martin once said the secret to success is to “be so good they can’t ignore you.” How do you get that good as a programmer? Build.

Which operating system is the best for programming? This is a perennial question in code boot camps where I’ve taught. I think students see the choice as a fork in the road, and they want pick the right direction. I don’t think there is a right direction. When you’re starting out, my advice is to try each one and choose for yourself.