[_huayra_]

"worth the effort" is very difficult to quantify. If you haven't touched C++ in a while, I'd say the things in C++20 are intriguing, even if half-baked:

* ranges means that we're starting to get composable algorithms. Compared to doing `for_each` and then `accumulate` on a container, you can compose both operations into one reusable "pipeline" of operations. I really grew to like this from other languages, and am glad that C++ is starting to get it * modules will help a lot, but I doubt we'll get widespread use for another year at least (until cmake has it; build2 has it, but that's a bit esoteric even though it's very pleasant to work with) * concepts make working with template-laden code a lot easier. Most of the tricks for obscure SFINAE removal of templates are no longer necessary; one can just express it in a "positive" way as if to say "the thing matching this template should have these properties", instead of convoluted ways to turn off templates under certain circumstances. * coroutines are very half-baked, but when combined with executors (which will hopefully come in 23) it will really be useful I think. The stackless nature makes them hard to reason about, but trying to add stackful coroutines would likely be a non-starter; it would require a lot of runtime support and modifications that would either require a lot of performance overhead OR backward-compat difficulties.

That said, unless you want to actually use it to DO something specific (e.g. make a game, work at a specific company), Rust or similar languages are probably more pleasant experiences. Without a standardized build tool with sane defaults, it's hard to just play around with things in a fun way. Trying to figure out how CMake + Conan works will take beginners at least a day in my experience, and the lack of a solid template "good defaults, applicable most places but easily changeable" for the build system + dependency system makes things a bit tedious to just try things out.