* Blockchain - this is usually the first that comes to mind.
* Rust - "hmm, where would I use it now?" is the question you'll ask if you just learned Rust but knew C++ already.
* Vulkan / Direct3d12 - yes, you now have the ability to recreate your own driver from scratch, but who has time for that? Even Microsoft Flight Simulator uses Direct3d 11. GPU ray-tracing will force you to use one of those though anyway.
* Blockchain - this is usually the first that comes to mind.
* Rust - "hmm, where would I use it now?" is the question you'll ask if you just learned Rust but knew C++ already.
* Vulkan / Direct3d12 - yes, you now have the ability to recreate your own driver from scratch, but who has time for that? Even Microsoft Flight Simulator uses Direct3d 11. GPU ray-tracing will force you to use one of those though anyway.
* WebAssembly - at least in it's current state.