// edition:2018 use std::ops::Deref; pub fn func<'a>(_x: impl Clone + Into<Vec<u8>> + 'a) {} pub fn func2<T>( _x: impl Deref<Target = Option<T>> + Iterator<Item = T>, _y: impl Iterator<Item = u8>, ) {} pub fn func3(_x: impl Iterator<Item = impl Iterator<Item = u8>> + Clone) {} pub fn func4<T: Iterator<Item = impl Clone>>(_x: T) {} pub fn func5( _f: impl for<'any> Fn(&'any str, &'any str) -> bool + for<'r> Other<T<'r> = ()>, _a: impl for<'beta, 'alpha, '_gamma> Auxiliary<'alpha, Item<'beta> = fn(&'beta ())>, ) {} pub trait Other { type T<'dependency>; } pub trait Auxiliary<'arena> { type Item<'input>; } pub async fn async_fn() {} pub struct Foo; impl Foo { pub fn method<'a>(_x: impl Clone + Into<Vec<u8>> + 'a) {} }