3 #![warn(clippy::result_map_unit_fn)]
6 fn do_nothing<T>(_: T) {}
8 fn diverge<T>(_: T) -> ! {
12 fn plus_one(value: usize) -> usize {
17 field: Result<usize, usize>,
21 fn do_result_nothing(&self, value: usize) {}
23 fn do_result_plus_one(&self, value: usize) -> usize {
29 fn result_map_unit_fn() {
30 let x = HasResult { field: Ok(10) };
32 x.field.map(plus_one);
33 let _: Result<(), usize> = x.field.map(do_nothing);
35 x.field.map(do_nothing);
37 x.field.map(do_nothing);
42 if let Ok(value) = x.field { do_nothing(value + captured) };
43 let _: Result<(), usize> = x.field.map(|value| do_nothing(value + captured));
45 x.field.map(|value| x.do_result_nothing(value + captured));
47 x.field.map(|value| { x.do_result_plus_one(value + captured); });
50 x.field.map(|value| do_nothing(value + captured));
52 x.field.map(|value| { do_nothing(value + captured) });
54 x.field.map(|value| { do_nothing(value + captured); });
56 x.field.map(|value| { { do_nothing(value + captured); } });
59 x.field.map(|value| diverge(value + captured));
61 x.field.map(|value| { diverge(value + captured) });
63 x.field.map(|value| { diverge(value + captured); });
65 x.field.map(|value| { { diverge(value + captured); } });
68 x.field.map(|value| plus_one(value + captured));
69 x.field.map(|value| { plus_one(value + captured) });
70 x.field.map(|value| { let y = plus_one(value + captured); });
72 x.field.map(|value| { plus_one(value + captured); });
74 x.field.map(|value| { { plus_one(value + captured); } });
77 x.field.map(|ref value| { do_nothing(value + captured) });
79 x.field.map(|value| println!("{:?}", value));