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 if let Ok(x_field) = x.field { do_nothing(x_field) }
37 if let Ok(x_field) = x.field { do_nothing(x_field) }
39 if let Ok(x_field) = x.field { diverge(x_field) }
42 if let Ok(value) = x.field { do_nothing(value + captured) };
43 let _: Result<(), usize> = x.field.map(|value| do_nothing(value + captured));
45 if let Ok(value) = x.field { x.do_result_nothing(value + captured) }
47 if let Ok(value) = x.field { x.do_result_plus_one(value + captured); }
50 if let Ok(value) = x.field { do_nothing(value + captured) }
52 if let Ok(value) = x.field { do_nothing(value + captured) }
54 if let Ok(value) = x.field { do_nothing(value + captured); }
56 if let Ok(value) = x.field { do_nothing(value + captured); }
59 if let Ok(value) = x.field { diverge(value + captured) }
61 if let Ok(value) = x.field { diverge(value + captured) }
63 if let Ok(value) = x.field { diverge(value + captured); }
65 if let Ok(value) = x.field { diverge(value + captured); }
68 x.field.map(|value| plus_one(value + captured));
69 x.field.map(|value| { plus_one(value + captured) });
70 if let Ok(value) = x.field { let y = plus_one(value + captured); }
72 if let Ok(value) = x.field { plus_one(value + captured); }
74 if let Ok(value) = x.field { plus_one(value + captured); }
77 if let Ok(ref value) = x.field { do_nothing(value + captured) }