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Description
Using rustc 1.55.0
Given the following code: https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=deaf96d3f30f20986ce469e1b49664ff
use std::iter::Sum;
fn main() {
println!("Hello, world!");
}
fn add<T: 'static + Sum<&T>>(values: &[T]) -> T {
values.iter().sum()
}The current output is:
❯ cargo run
Compiling lifetimes v0.1.0 (/Users/josephlyons/Desktop/lifetimes)
error[E0637]: `&` without an explicit lifetime name cannot be used here
--> src/main.rs:52:25
|
52 | fn add<T: 'static + Sum<&T>>(values: &[T]) -> T {
| ^ explicit lifetime name needed here
error[E0621]: explicit lifetime required in the type of `values`
--> src/main.rs:53:19
|
53 | values.iter().sum()
| ^^^ lifetime `'static` required
Some errors have detailed explanations: E0621, E0637.
For more information about an error, try `rustc --explain E0621`.
error: could not compile `lifetimes` due to 2 previous errors
Not sure what the proposed output would be, but some sort of help / suggestion could help to make this easier for beginners
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