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//@ run-rustfix
trait Greeter0 {
fn greet(&self);
}
trait Greeter1 {
fn greet(&self);
}
type BoxedGreeter = (Box<dyn Greeter0>, Box<dyn Greeter1>);
//~^ HELP to declare that the trait object captures data from argument `self`, you can add a lifetime parameter `'a` in the type alias
struct FixedGreeter<'a>(pub &'a str);
impl Greeter0 for FixedGreeter<'_> {
fn greet(&self) {
println!("0 {}", self.0)
}
}
impl Greeter1 for FixedGreeter<'_> {
fn greet(&self) {
println!("1 {}", self.0)
}
}
struct Greetings(pub Vec<String>);
impl Greetings {
pub fn get(&self, i: usize) -> BoxedGreeter {
(Box::new(FixedGreeter(&self.0[i])), Box::new(FixedGreeter(&self.0[i])))
//~^ ERROR lifetime may not live long enough
}
}
fn main() {
let mut g = Greetings {0 : vec!()};
g.0.push("a".to_string());
g.0.push("b".to_string());
g.get(0).0.greet();
g.get(0).1.greet();
g.get(1).0.greet();
g.get(1).1.greet();
}
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