Code shared from the Rust Playground

playground.rs

fn main() {
    let some_string = convert(vec!["one", "two", "three"]);
    println!("{}", some_string);
}

//Doesn't Work
pub fn convert<T>(values: Vec<T>) -> String
where
    T: Into<String>,
{
    let strings: Vec<String> = values.into_iter().map(Into::into).collect();
    strings.join(",")
}

/*
//Works
pub fn convert<T>(values: T) -> String where T: Into<String> {
    values.into()
}
*/