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Hi folks,

I'd like to be able to:

let x = vec![Foo{ ... } ... ];
let y: Vec<String> = x.into()

or

let x = &[Foo{ ... } ... ];
let y: &[&str] = x.as_ref()

but I can't:

pub struct Foo{
    bar: String
}
impl From<Foo> for String {
    fn from(value: Foo) -> String {
        value.bar
    }
}
impl AsRef<str> for Foo {
    fn as_ref(&self) -> &str {
        self.bar.as_ref()
    }
}
// error: this is not defined in the current crate
impl From<Vec<Foo>> for Vec<String> {
    fn from(value: Vec<Foo>) -> Self {
        value.into_iter().map(|x| x.bar).collect()
    }
}

Could you please advise what is the best practice for this?

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