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// run-rustfix
#![feature(custom_inner_attributes)]
#![warn(clippy::manual_split_once)]
#![allow(unused, clippy::iter_skip_next, clippy::iter_nth_zero)]
extern crate itertools;
#[allow(unused_imports)]
use itertools::Itertools;
fn main() {
let _ = "key=value".splitn(2, '=').nth(2);
let _ = "key=value".splitn(2, '=').nth(1).unwrap();
let _ = "key=value".splitn(2, '=').skip(1).next().unwrap();
let (_, _) = "key=value".splitn(2, '=').next_tuple().unwrap();
let s = String::from("key=value");
let _ = s.splitn(2, '=').nth(1).unwrap();
let s = Box::<str>::from("key=value");
let _ = s.splitn(2, '=').nth(1).unwrap();
let s = &"key=value";
let _ = s.splitn(2, '=').skip(1).next().unwrap();
fn _f(s: &str) -> Option<&str> {
let _ = s.splitn(2, '=').nth(1)?;
let _ = s.splitn(2, '=').skip(1).next()?;
let _ = s.rsplitn(2, '=').nth(1)?;
let _ = s.rsplitn(2, '=').skip(1).next()?;
None
}
// Don't lint, slices don't have `split_once`
let _ = [0, 1, 2].splitn(2, |&x| x == 1).nth(1).unwrap();
// `rsplitn` gives the results in the reverse order of `rsplit_once`
let _ = "key=value".rsplitn(2, '=').nth(1).unwrap();
let (_, _) = "key=value".rsplitn(2, '=').next_tuple().unwrap();
let _ = s.rsplitn(2, '=').nth(1);
}
fn indirect() -> Option<()> {
let mut iter = "a.b.c".splitn(2, '.');
let l = iter.next().unwrap();
let r = iter.next().unwrap();
let mut iter = "a.b.c".splitn(2, '.');
let l = iter.next()?;
let r = iter.next()?;
let mut iter = "a.b.c".rsplitn(2, '.');
let r = iter.next().unwrap();
let l = iter.next().unwrap();
let mut iter = "a.b.c".rsplitn(2, '.');
let r = iter.next()?;
let l = iter.next()?;
// could lint, currently doesn't
let mut iter = "a.b.c".splitn(2, '.');
let other = 1;
let l = iter.next()?;
let r = iter.next()?;
let mut iter = "a.b.c".splitn(2, '.');
let mut mut_binding = iter.next()?;
let r = iter.next()?;
let mut iter = "a.b.c".splitn(2, '.');
let tuple = (iter.next()?, iter.next()?);
// should not lint
let mut missing_unwrap = "a.b.c".splitn(2, '.');
let l = missing_unwrap.next();
let r = missing_unwrap.next();
let mut mixed_unrap = "a.b.c".splitn(2, '.');
let unwrap = mixed_unrap.next().unwrap();
let question_mark = mixed_unrap.next()?;
let mut iter = "a.b.c".splitn(2, '.');
let same_name = iter.next()?;
let same_name = iter.next()?;
let mut iter = "a.b.c".splitn(2, '.');
let shadows_existing = "d";
let shadows_existing = iter.next()?;
let r = iter.next()?;
let mut iter = "a.b.c".splitn(2, '.');
let becomes_shadowed = iter.next()?;
let becomes_shadowed = "d";
let r = iter.next()?;
let mut iter = "a.b.c".splitn(2, '.');
let l = iter.next()?;
let r = iter.next()?;
let third_usage = iter.next()?;
let mut n_three = "a.b.c".splitn(3, '.');
let l = n_three.next()?;
let r = n_three.next()?;
let mut iter = "a.b.c".splitn(2, '.');
{
let in_block = iter.next()?;
}
let r = iter.next()?;
let mut lacks_binding = "a.b.c".splitn(2, '.');
let _ = lacks_binding.next()?;
let r = lacks_binding.next()?;
let mut mapped = "a.b.c".splitn(2, '.').map(|_| "~");
let l = iter.next()?;
let r = iter.next()?;
let mut assigned = "";
let mut iter = "a.b.c".splitn(2, '.');
let l = iter.next()?;
assigned = iter.next()?;
None
}
fn _msrv_1_51() {
#![clippy::msrv = "1.51"]
// `str::split_once` was stabilized in 1.52. Do not lint this
let _ = "key=value".splitn(2, '=').nth(1).unwrap();
let mut iter = "a.b.c".splitn(2, '.');
let a = iter.next().unwrap();
let b = iter.next().unwrap();
}
fn _msrv_1_52() {
#![clippy::msrv = "1.52"]
let _ = "key=value".splitn(2, '=').nth(1).unwrap();
let mut iter = "a.b.c".splitn(2, '.');
let a = iter.next().unwrap();
let b = iter.next().unwrap();
}
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