this post was submitted on 21 Jul 2025
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That's not what Rust's documentation says. It does a compile-time bounds check if it can prove what the index might be during compilation, and a runtime bounds check if it can't. In release mode, it tries harder to prove the maximum index is below the minimum length, but it still falls back to a runtime bounds check if it can't unless you use
get_unchecked, which isunsafe.