3 #![warn(clippy::option_map_unit_fn)]
5 #![allow(clippy::unnecessary_wraps)]
7 fn do_nothing<T>(_: T) {}
9 fn diverge<T>(_: T) -> ! {
13 fn plus_one(value: usize) -> usize {
17 fn option() -> Option<usize> {
26 fn do_option_nothing(&self, value: usize) {}
28 fn do_option_plus_one(&self, value: usize) -> usize {
33 fn option_map_unit_fn() {
34 let x = HasOption { field: Some(10) };
36 x.field.map(plus_one);
37 let _ : Option<()> = x.field.map(do_nothing);
39 x.field.map(do_nothing);
41 x.field.map(do_nothing);
46 if let Some(value) = x.field { do_nothing(value + captured) };
47 let _ : Option<()> = x.field.map(|value| do_nothing(value + captured));
49 x.field.map(|value| x.do_option_nothing(value + captured));
51 x.field.map(|value| { x.do_option_plus_one(value + captured); });
54 x.field.map(|value| do_nothing(value + captured));
56 x.field.map(|value| { do_nothing(value + captured) });
58 x.field.map(|value| { do_nothing(value + captured); });
60 x.field.map(|value| { { do_nothing(value + captured); } });
63 x.field.map(|value| diverge(value + captured));
65 x.field.map(|value| { diverge(value + captured) });
67 x.field.map(|value| { diverge(value + captured); });
69 x.field.map(|value| { { diverge(value + captured); } });
72 x.field.map(|value| plus_one(value + captured));
73 x.field.map(|value| { plus_one(value + captured) });
74 x.field.map(|value| { let y = plus_one(value + captured); });
76 x.field.map(|value| { plus_one(value + captured); });
78 x.field.map(|value| { { plus_one(value + captured); } });
81 x.field.map(|ref value| { do_nothing(value + captured) });
83 option().map(do_nothing);}