for index in range() used for iteration over slice

[pythonesque]

This might have to wait a while, and it might be really hard / impossible to detect, but for a simple loop like this:

let x = something_with_Slice<uint>_implemented;
for i in range(0, n) {
  /*every instance of x is called as x[i], where i is the same immutable uint (*not* MutSlice etc.) */
}

you should just use an iterator.

[jdm]

Similarly, I've seen

let mut i = 0;
for val in v.iter() {
   //...
   i += 1;
}

which would be better expressed with .iter().enumerate().