4 ms·

There is certainly a cost, I'm just not sure I would call it abstraction cost. Is memory safety an abstraction? Safe Rust has runtime costs as well (mostly bou

• littlestymaar 9y ago
  Rust's bound checks are cited a lot here on hn as a performance concern but in practice I rarely encounter them because in rust you mostly use the iterator API for loops and it doesn't need bound checking. For an illustration of a safety-related runtime cost that you almost always have to pay, Uft8 validation of strings is a better example IMHO.