[vvanders]

As someone who built a career in C++ I like that Rust's generics are a poor approximation of templates(and that includes having worked with some of the modern C++ features). I have months of my life I've lost to the increased compile times from Boost on the applications I've worked on.

C++ also makes it way too easy to reach for shared_ptr instead of unique_ptr leading to all sorts of unfortunate things. Rust makes that much harder and RefCell/Rc/Arc push towards design that are "single owner" which I've found scale out much better once you move into programs that are of a significant complexity.

C++ still wins in portability on some platforms but I have a hard time picking it for anything greenfield at this point.

[pjmlp]

Right now Rust eco-system still isn't as mature as C++ in what concerns integration with Java and .NET, and GPGPU programming. The domains I care about.

However with the support of companies like Microsoft, Rust will eventually get there.

By the way BUILD 2020 will have Rust sessions.

[neutronicus]

I would pick C++ for anything to do with high-performance linear algebra. There are a few other domains (desktop GUI, CAD) where I don't trust the Rust library ecosystem.

But, yeah, there are a ton of domains (notably embedded) where I would want Rust.