1 // run-rustfix
2 #![allow(dead_code)]
3 #![warn(clippy::search_is_some)]
4
main()5 fn main() {
6 let v = vec![3, 2, 1, 0, -1, -2, -3];
7 let y = &&42;
8
9 // Check `find().is_some()`, single-line case.
10 let _ = v.iter().find(|&x| *x < 0).is_some();
11 let _ = (0..1).find(|x| **y == *x).is_some(); // one dereference less
12 let _ = (0..1).find(|x| *x == 0).is_some();
13 let _ = v.iter().find(|x| **x == 0).is_some();
14
15 // Check `position().is_some()`, single-line case.
16 let _ = v.iter().position(|&x| x < 0).is_some();
17
18 // Check `rposition().is_some()`, single-line case.
19 let _ = v.iter().rposition(|&x| x < 0).is_some();
20
21 let s1 = String::from("hello world");
22 let s2 = String::from("world");
23 // caller of `find()` is a `&`static str`
24 let _ = "hello world".find("world").is_some();
25 let _ = "hello world".find(&s2).is_some();
26 let _ = "hello world".find(&s2[2..]).is_some();
27 // caller of `find()` is a `String`
28 let _ = s1.find("world").is_some();
29 let _ = s1.find(&s2).is_some();
30 let _ = s1.find(&s2[2..]).is_some();
31 // caller of `find()` is slice of `String`
32 let _ = s1[2..].find("world").is_some();
33 let _ = s1[2..].find(&s2).is_some();
34 let _ = s1[2..].find(&s2[2..]).is_some();
35 }
36
is_none()37 fn is_none() {
38 let v = vec![3, 2, 1, 0, -1, -2, -3];
39 let y = &&42;
40
41 // Check `find().is_none()`, single-line case.
42 let _ = v.iter().find(|&x| *x < 0).is_none();
43 let _ = (0..1).find(|x| **y == *x).is_none(); // one dereference less
44 let _ = (0..1).find(|x| *x == 0).is_none();
45 let _ = v.iter().find(|x| **x == 0).is_none();
46
47 // Check `position().is_none()`, single-line case.
48 let _ = v.iter().position(|&x| x < 0).is_none();
49
50 // Check `rposition().is_none()`, single-line case.
51 let _ = v.iter().rposition(|&x| x < 0).is_none();
52
53 let s1 = String::from("hello world");
54 let s2 = String::from("world");
55
56 // caller of `find()` is a `&`static str`
57 let _ = "hello world".find("world").is_none();
58 let _ = "hello world".find(&s2).is_none();
59 let _ = "hello world".find(&s2[2..]).is_none();
60 // caller of `find()` is a `String`
61 let _ = s1.find("world").is_none();
62 let _ = s1.find(&s2).is_none();
63 let _ = s1.find(&s2[2..]).is_none();
64 // caller of `find()` is slice of `String`
65 let _ = s1[2..].find("world").is_none();
66 let _ = s1[2..].find(&s2).is_none();
67 let _ = s1[2..].find(&s2[2..]).is_none();
68 }
69