What technologies have you invested time in learning that you are going to keep using/experimenting/learning about in the next year?
I'm a professional Android engineer, and as for me: I learned Kotlin and use it at work every day, and so far I like it a lot. I also learned a little bit of iOS development with Swift. I also experimented with Flutter developing non-trivial "Hello world" apps, and I feel that it reduces a lot of friction that a lot of native mobile developers encounter.
What's your favorite tech in 2018?
I discovered that git had bash installed quite early on, so my initial automation and reporting was based on UNIX pipelines. As the data volumes became bigger and the customer requirements became more demanding, I eventually bit the bullet and started learning perl one-liners to do some gymnastics that just weren't possible or practical with just bash (first big win was adding the MD5 of the line so that I could dedupe the obfuscated data).
This lead to eventually writing full scripts in perl and now I have basically all of my reporting automated, even able to take up some 'value add' reporting that I didn't think was going to be possible.
So yeah, not a new technology but I'm now a perl convert and will almost certainly use it in the future if I'm faced with a similar situation.