The context what you should spend time to learn starting out. TL;DR

> Here is what I think in-the-trenches software engineers should know about data structures and algorithms: [...]

> If you want to prepare yourself for a career, and also stand out in job interviews, learn how to write tests: [...]

I feel like I keep writing these little context comments to fix the problem of clickbait titles or those lacking context. It helps to frame the rest of the comments which might be coming at it from different angles.