This is why you let the javascript fanboys come and go with their "angularjs". You can focus on tools that do not change so much. Just to name a few, C++ (slowl

This is why you let the javascript fanboys come and go with their "angularjs". You can focus on tools that do not change so much. Just to name a few, C++ (slowly updates), C, posix, Qt and many other native technologies that have a good "shelf life" of at least nearly 5-10 years with only casual update. Further on, the core of computer science has even better shelf life. It basically never expires. Personally I split two things. The stuff that I need to learn just now to get my current work done, and the stuff that matters in the long term. The former can change quickly and I don't fuss about it. If It's the buzzwords and latest tech gimmicks or just a new technology I didn't use before, I learn as much as I need to and as much as sticks naturally over the course of my work, but I don't always actively try to retain it. The latter part however is the real "gold". Once you know the core computer sciency stuff you can always build on that later on using whatever tools and technologies.