VSCode / IntelliJ / Netbeans / Eclipse - it is crazy how much time a decent IDE with refactoring support can save. (And still many on HN hate on them. I am fair

VSCode / IntelliJ / Netbeans / Eclipse - it is crazy how much time a decent IDE with refactoring support can save. (And still many on HN hate on them. I am fairly sure that for most people that spend lots of time on vim had spent as much time as they spend to get good at vim at learning and customizing a normal, good IDE, they'd have much better return on investment.) Git / SVN / CVS - never having to worry about if I can undo my way back to the last combination of files that worked its a superpower that we mostly take for granted, but I was over 20 when I learned it. JUnit - again, being able to experiment fearlessly.