Background: I have a large serde_json value that I want to be read-only (the authoritative source is an encrypted SQLite DB and should only be updated when that gets updated) The issue, I would like a single get function that returns a generic type ```rust use serde_json; pub struct Configuration { config: serde_json::Value, } impl Configuration { async fn get(&self, key: &str) -> Result { let tmp_value: = &self.config["test"]; // This would be repeated for String, bool, etc if tmp_value.is_i64() { match tmp_value.as_i64 { Some(x) => Ok(x), Err(e) => Err(()), } } else { Err(()) } } } ``` However I get: "mismatched types expected type parameter T found type i64" Is it even possible to return multiple types from a single function? EDIT: SOLUTION Here is the solution I came up with: ```rust pub struct Configuration {} impl Configuration { fn get std::str::FromStr>() -> Result { Ok(T::from_str("1234"); } } fn main() { let my_conf_val = Configuration::get(); } ```