According to the JSON specification, the root of a JSON document can be either an object or an array. The first case is easily deserialized by serde_json using a struct
#[derive(Deserialize)] struct Person { first_name: String, last_name: String, } fn main() { let s = r#"[{"first_name": "John", "last_name": "Doe"}]"#; // this will break because we have a top-level array let p: Person = serde_json::from_str(s).unwrap(); println!("Name: {} {}", p.first_name, p.last_name); } However I cannot find any documentation on how to deserialize an (unnamed) array of structs.
