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> If you want to use modern systems, and you're going with C++. Good luck. You're gonna need it.
if you're doing modern stuff you just use a task-based parallelism lib and pass things by value with libs such as https://github.com/taskflow/taskflow, https://github.com/cameron314/concurrentqueue ...
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I know this one hit quite a few people: https://github.com/rust-windowing/winit/issues/1773. Compiles on new rustc but panics at runtime. API churn also made upgrading to a new winit painful.
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> People can push unfinished stuff in any situation.
But they don't in Rust. My example of Min Const Generics is an example of this. Async-Await (developed by GP on this thread) was also delayed to give it more time to bake.
I urge you to look at the releases page (https://github.com/rust-lang/rust/blob/master/RELEASES.md). Look at how few user facing changes are made with every release. This is a good thing! As long as you're ok with skipping these and the performance improvements, you can stay on an older release for basically forever. Most Rust libraries are conservative about their minimum supported Rust version (MSRV) so there isn't usually a push to upgrade at all.
If the OP wants a compiler and toolchain that only changes every six months, that's already available. He can stick with the same compiler for six months or even longer with 0 downsides.
