mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-18 02:38:28 +00:00
114 lines
3.5 KiB
Rust
114 lines
3.5 KiB
Rust
// run-rustfix
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#![allow(dead_code)]
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#![warn(clippy::search_is_some)]
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fn main() {
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let v = vec![3, 2, 1, 0, -1, -2, -3];
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let y = &&42;
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// Check `find().is_some()`, single-line case.
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let _ = v.iter().find(|&x| *x < 0).is_some();
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let _ = (0..1).find(|x| **y == *x).is_some(); // one dereference less
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let _ = (0..1).find(|x| *x == 0).is_some();
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let _ = v.iter().find(|x| **x == 0).is_some();
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let _ = (4..5).find(|x| *x == 1 || *x == 3 || *x == 5).is_some();
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let _ = (1..3).find(|x| [1, 2, 3].contains(x)).is_some();
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let _ = (1..3).find(|x| *x == 0 || [1, 2, 3].contains(x)).is_some();
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let _ = (1..3).find(|x| [1, 2, 3].contains(x) || *x == 0).is_some();
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let _ = (1..3)
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.find(|x| [1, 2, 3].contains(x) || *x == 0 || [4, 5, 6].contains(x) || *x == -1)
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.is_some();
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// Check `position().is_some()`, single-line case.
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let _ = v.iter().position(|&x| x < 0).is_some();
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// Check `rposition().is_some()`, single-line case.
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let _ = v.iter().rposition(|&x| x < 0).is_some();
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let s1 = String::from("hello world");
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let s2 = String::from("world");
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// caller of `find()` is a `&`static str`
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let _ = "hello world".find("world").is_some();
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let _ = "hello world".find(&s2).is_some();
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let _ = "hello world".find(&s2[2..]).is_some();
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// caller of `find()` is a `String`
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let _ = s1.find("world").is_some();
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let _ = s1.find(&s2).is_some();
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let _ = s1.find(&s2[2..]).is_some();
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// caller of `find()` is slice of `String`
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let _ = s1[2..].find("world").is_some();
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let _ = s1[2..].find(&s2).is_some();
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let _ = s1[2..].find(&s2[2..]).is_some();
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}
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#[allow(clippy::clone_on_copy, clippy::map_clone)]
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mod issue7392 {
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struct Player {
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hand: Vec<usize>,
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}
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fn filter() {
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let p = Player {
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hand: vec![1, 2, 3, 4, 5],
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};
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let filter_hand = vec![5];
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let _ = p
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.hand
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.iter()
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.filter(|c| filter_hand.iter().find(|cc| c == cc).is_some())
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.map(|c| c.clone())
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.collect::<Vec<_>>();
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}
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struct PlayerTuple {
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hand: Vec<(usize, char)>,
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}
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fn filter_tuple() {
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let p = PlayerTuple {
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hand: vec![(1, 'a'), (2, 'b'), (3, 'c'), (4, 'd'), (5, 'e')],
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};
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let filter_hand = vec![5];
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let _ = p
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.hand
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.iter()
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.filter(|(c, _)| filter_hand.iter().find(|cc| c == *cc).is_some())
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.map(|c| c.clone())
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.collect::<Vec<_>>();
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}
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fn field_projection() {
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struct Foo {
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foo: i32,
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bar: u32,
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}
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let vfoo = vec![Foo { foo: 1, bar: 2 }];
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let _ = vfoo.iter().find(|v| v.foo == 1 && v.bar == 2).is_some();
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let vfoo = vec![(42, Foo { foo: 1, bar: 2 })];
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let _ = vfoo
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.iter()
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.find(|(i, v)| *i == 42 && v.foo == 1 && v.bar == 2)
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.is_some();
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}
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fn index_projection() {
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let vfoo = vec![[0, 1, 2, 3]];
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let _ = vfoo.iter().find(|a| a[0] == 42).is_some();
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}
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#[allow(clippy::match_like_matches_macro)]
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fn slice_projection() {
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let vfoo = vec![[0, 1, 2, 3, 0, 1, 2, 3]];
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let _ = vfoo.iter().find(|sub| sub[1..4].len() == 3).is_some();
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}
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fn please(x: &u32) -> bool {
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*x == 9
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}
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fn more_projections() {
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let x = 19;
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let ppx: &u32 = &x;
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let _ = [ppx].iter().find(|ppp_x: &&&u32| please(**ppp_x)).is_some();
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let _ = [String::from("Hey hey")].iter().find(|s| s.len() == 2).is_some();
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}
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}
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