src/tools/clippy/tests/ui/iter_next_slice.rs

   1 #![warn(clippy::iter_next_slice)]
   2 #![allow(clippy::useless_vec)]
   3
   4 fn main() {
   5     // test code goes here
   6     let s = [1, 2, 3];
   7     let v = vec![1, 2, 3];
   8
   9     let _ = s.iter().next();
  10     // Should be replaced by s.first()
  11
  12     let _ = s[2..].iter().next();
  13     // Should be replaced by s.get(2)
  14
  15     let _ = v[5..].iter().next();
  16     // Should be replaced by v.get(5)
  17
  18     let _ = v.iter().next();
  19     // Should be replaced by v.first()
  20
  21     let o = Some(5);
  22     o.iter().next();
  23     // Shouldn't be linted since this is not a Slice or an Array
  24 }