On Monday, 17 December 2018 at 06:08:58 UTC, Jani Hur wrote:
Publish dates are 2014 and 2015. How much the language has changed/evolved since then and how much it will evolve in future ? So are these books relevant today and still next two years ?
There haven't been any changes in the language significant enough to make either book irrelevant, nor will there be for a while. And the authors of both books hang out on the forums if you find any inaccuracies you'd like to ask about.