There is a way around this, though, that gives the same effect as the C/C++ code: using iterators. The previous code can be converted into the following:
let arr = ['a', 'b', 'c', 'd', 'e', 'f']; for c in &arr { println!("{}", c); }
This will compile roughly to the same machine code as the C/C++ variant since it won't check the bounds of the slice more than once, and it will then use the same pointer arithmetic. This is great when iterating through a slice, but in the case of a direct lookup, it can be an issue. Suppose we will receive thousands of 100-element slices, and we are supposed to get the last element of each and print it. In this case, iterating through all 100 elements of each array just to get the last one is ...
