core::range::iter

Macro unsafe_range_trusted_random_access_impl

Source 
macro_rules! unsafe_range_trusted_random_access_impl {
    ($($t:ty)*) => { ... };
}
🔬This is a nightly-only experimental API. (new_range_api #125687)
Expand description

Safety: This macro must only be used on types that are Copy and result in ranges which have an exact size_hint() where the upper bound must not be None.