extern crate itertools;


fn main(){
    let joined = join_slice(&vec!["one", "two", "three"]);
    println!("{}", joined);
}

//This works
#[allow(dead_code)]
pub fn join<'a, T>(values: Vec<T>) -> String where T: Into<&'a str>{
    use itertools::Itertools;
    values.into_iter()
        .map(Into::into)
        .join(",")
}

//But I want this
#[allow(dead_code)]
pub fn join_slice<'a, T>(values: &[T]) -> String where T: Into<&'a str>{
    use itertools::Itertools;
    values.into_iter()
        .map(Into::into)
        .join(",")
}