2 #![warn(clippy::iter_overeager_cloned, clippy::redundant_clone, clippy::filter_next)]
6 let vec = vec!["1".to_string(), "2".to_string(), "3".to_string()];
8 let _: Option<String> = vec.iter().last().cloned();
10 let _: Option<String> = vec.iter().chain(vec.iter()).next().cloned();
12 let _: usize = vec.iter().filter(|x| x == &"2").count();
14 let _: Vec<_> = vec.iter().take(2).cloned().collect();
16 let _: Vec<_> = vec.iter().skip(2).cloned().collect();
18 let _ = vec.iter().filter(|x| x == &"2").nth(2).cloned();
20 let _ = [Some(Some("str".to_string())), Some(Some("str".to_string()))]
21 .iter().flatten().cloned();
23 // Not implemented yet
24 let _ = vec.iter().cloned().filter(|x| x.starts_with('2'));
26 // Not implemented yet
27 let _ = vec.iter().cloned().map(|x| x.len());
29 // This would fail if changed.
30 let _ = vec.iter().cloned().map(|x| x + "2");
32 // Not implemented yet
33 let _ = vec.iter().cloned().find(|x| x == "2");
35 // Not implemented yet
36 let _ = vec.iter().cloned().for_each(|x| assert!(!x.is_empty()));
38 // Not implemented yet
39 let _ = vec.iter().cloned().all(|x| x.len() == 1);
41 // Not implemented yet
42 let _ = vec.iter().cloned().any(|x| x.len() == 1);
44 // Should probably stay as it is.
45 let _ = [0, 1, 2, 3, 4].iter().cloned().take(10);
49 fn cloned_flatten(x: Option<&Option<String>>) -> Option<String> {