3 #![feature(custom_inner_attributes)]
4 #![warn(clippy::manual_split_once)]
5 #![allow(clippy::iter_skip_next, clippy::iter_nth_zero, clippy::needless_splitn)]
7 extern crate itertools;
9 #[allow(unused_imports)]
10 use itertools::Itertools;
13 let _ = Some("key=value".split_once('=').map_or("key=value", |x| x.0));
14 let _ = "key=value".splitn(2, '=').nth(2);
15 let _ = "key=value".split_once('=').map_or("key=value", |x| x.0);
16 let _ = "key=value".split_once('=').map_or("key=value", |x| x.0);
17 let _ = "key=value".split_once('=').unwrap().1;
18 let _ = "key=value".split_once('=').unwrap().1;
19 let (_, _) = "key=value".split_once('=').unwrap();
21 let s = String::from("key=value");
22 let _ = s.split_once('=').map_or(&*s, |x| x.0);
24 let s = Box::<str>::from("key=value");
25 let _ = s.split_once('=').map_or(&*s, |x| x.0);
28 let _ = s.split_once('=').map_or(*s, |x| x.0);
30 fn _f(s: &str) -> Option<&str> {
31 let _ = s.split_once("key=value").map_or(s, |x| x.0);
32 let _ = s.split_once("key=value")?.1;
33 let _ = s.split_once("key=value")?.1;
37 // Don't lint, slices don't have `split_once`
38 let _ = [0, 1, 2].splitn(2, |&x| x == 1).nth(1).unwrap();
40 // `rsplitn` gives the results in the reverse order of `rsplit_once`
41 let _ = "key=value".rsplitn(2, '=').next().unwrap();
42 let _ = "key=value".rsplit_once('=').unwrap().0;
43 let _ = "key=value".rsplit_once('=').map(|x| x.1);
44 let (_, _) = "key=value".rsplit_once('=').map(|(x, y)| (y, x)).unwrap();
48 #![clippy::msrv = "1.51"]
49 // `str::split_once` was stabilized in 1.16. Do not lint this
50 let _ = "key=value".splitn(2, '=').nth(1).unwrap();
54 #![clippy::msrv = "1.52"]
55 let _ = "key=value".split_once('=').unwrap().1;