5 trait InTraitDefnParameters {
6 fn in_parameters(_: impl Debug) -> String;
9 impl InTraitDefnParameters for () {
10 fn in_parameters(v: impl Debug) -> String {
11 format!("() + {:?}", v)
16 let s = <() as InTraitDefnParameters>::in_parameters(22);
17 assert_eq!(s, "() + 22");