2 #![warn(clippy::iter_overeager_cloned, clippy::redundant_clone, clippy::filter_next)]
3 #![allow(dead_code, clippy::let_unit_value)]
6 let vec = vec!["1".to_string(), "2".to_string(), "3".to_string()];
8 let _: Option<String> = vec.iter().cloned().last();
10 let _: Option<String> = vec.iter().chain(vec.iter()).cloned().next();
12 let _: usize = vec.iter().filter(|x| x == &"2").cloned().count();
14 let _: Vec<_> = vec.iter().cloned().take(2).collect();
16 let _: Vec<_> = vec.iter().cloned().skip(2).collect();
18 let _ = vec.iter().filter(|x| x == &"2").cloned().nth(2);
20 let _ = [Some(Some("str".to_string())), Some(Some("str".to_string()))]
25 // Not implemented yet
26 let _ = vec.iter().cloned().filter(|x| x.starts_with('2'));
28 // Not implemented yet
29 let _ = vec.iter().cloned().map(|x| x.len());
31 // This would fail if changed.
32 let _ = vec.iter().cloned().map(|x| x + "2");
34 // Not implemented yet
35 let _ = vec.iter().cloned().find(|x| x == "2");
37 // Not implemented yet
38 let _ = vec.iter().cloned().for_each(|x| assert!(!x.is_empty()));
40 // Not implemented yet
41 let _ = vec.iter().cloned().all(|x| x.len() == 1);
43 // Not implemented yet
44 let _ = vec.iter().cloned().any(|x| x.len() == 1);
46 // Should probably stay as it is.
47 let _ = [0, 1, 2, 3, 4].iter().cloned().take(10);
49 // `&Range<_>` doesn't implement `IntoIterator`
50 let _ = [0..1, 2..5].iter().cloned().flatten();
54 fn cloned_flatten(x: Option<&Option<String>>) -> Option<String> {