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// check-pass
struct It;
struct Data {
items: Vec<It>,
}
impl Data {
fn new() -> Self {
Self {
items: vec![It, It],
}
}
fn content(&self) -> impl Iterator<Item = &It> {
self.items.iter()
}
}
struct Container<'a> {
name: String,
resolver: Box<dyn Resolver + 'a>,
}
impl<'a> Container<'a> {
fn new<R: Resolver + 'a>(name: &str, resolver: R) -> Self {
Self {
name: name.to_owned(),
resolver: Box::new(resolver),
}
}
}
trait Resolver {}
impl<R: Resolver> Resolver for &R {}
impl Resolver for It {}
fn get<'a>(mut items: impl Iterator<Item = &'a It>) -> impl Resolver + 'a {
items.next().unwrap()
}
fn get2<'a, 'b: 'b>(mut items: impl Iterator<Item = &'a It>) -> impl Resolver + 'a {
items.next().unwrap()
}
fn main() {
let data = Data::new();
let resolver = get(data.content());
let _ = ["a", "b"]
.iter()
.map(|&n| Container::new(n, &resolver))
.map(|c| c.name)
.collect::<Vec<_>>();
let resolver = get2(data.content());
let _ = ["a", "b"]
.iter()
.map(|&n| Container::new(n, &resolver))
.map(|c| c.name)
.collect::<Vec<_>>();
}
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