4 ms·

I'm sure Rust also has a way to disable bounds/overflow checks for speed. Do benchmarks utilise it?

• formerly_proven 5y ago
  Rust should be able to elide more checks than most other languages without impacting safety.
  • dom96 5y ago
    That's the assumption, but that doesn't mean it's the case. Certainly bounds checks are impossible to prove at compile-time.
    • ObscureScience 5y ago
      What language are you talking about?
• nicoburns 5y ago
  Rust doesn’t have a compiler flag for this, instead it has separate functions that don’t do the checking. E.g. Vec has a .get_unchecked function. Such functions can only be used in an unsafe block, and should only be used if bounds checking is handled elsewhere such that it would be impossible to cause an out of bounds error at runtime. It’s also often possible to get rust to elide bounds checks by using iterators, which often don’t need them as they know the length up front.