What is the equivalent of the join operator over a vector of Strings?

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I wasn’t able to find the Rust equivalent for the “join” operator over a vector of Strings. I have a Vec<String> and I’d like to join them as a single String:

let string_list = vec!["Foo".to_string(),"Bar".to_string()];
let joined = something::join(string_list,"-");
assert_eq!("Foo-Bar", joined);

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