On Thursday, 28 January 2016 at 22:30:51 UTC, nbro wrote:
other. Overall, which one has a better design and a more promising future?
The long term future is "uncertain" for both I think. D depends on two people and Rust depends on Mozilla. C++ has much much wider backing.
Rust is very opinionated and you have to figure out for yourself if you want the constraints of linear typing, but the semantics are quite clean. D is closer to C++ style templating and OO, and currently focus on enabling binding to non-template C++ libraries. Rust has more developers behind it. I suggest you read Ali's online book and the online Rust tutorial to get a feel for both.
Which one is more performant, in which situations?
D allows you to turn off boundschecks, which should make it faster. Currently safe programming in D involves the GC which is much easier, but less performant than Rusts linear typing. There are those that hope for a comparable non-GC solution for D this year, but no concrete description has emerged. Both languages have LLVM backends.
