In general it's possible to write Rust code that is competitive in speed with C and C++. Some safety features like bounds checking do have a small performance

In general it's possible to write Rust code that is competitive in speed with C and C++. Some safety features like bounds checking do have a small performance cost, though in typical performance-sensitive code it is on the order of 1–2%. You can write unsafe code to avoid the penalty when really necessary. The programs submitted to the benchmark game currently show Rust faster than g++ in some benchmarks, slower in others, but generally in the same ballpark. Of course this changes as the compilers and the programs improve, and the benchmark game isn't representative of anything in particular, but it illustrates some of what's possible. http://benchmarksgame.alioth.debian.org/u64q/compare.php?lang=rust&lang2=gpp http://benchmarksgame.alioth.debian.org/u64q/compare.php?lan...