fn try_from(user_id: &'a str) -> Result<UserId, Error> {
        let (localpart, host, port) = parse_id('@', user_id)?;
        let downcased_localpart = localpart.to_lowercase();

        if !USER_LOCALPART_PATTERN.is_match(&downcased_localpart) {
            return Err(Error::InvalidCharacters);
        }

        Ok(UserId {
            hostname: host,
            port: port,
            localpart: downcased_localpart.to_owned(),
        })
    }
/// Attempts to create a new Matrix user ID from a string representation.
///
/// The string must include the leading @ sigil, the localpart, a literal colon, and a valid
/// server name.
Attempts to create a new Matrix user ID from a string representation.
The string must include the leading @ sigil, the localpart, a literal colon, and a valid
server name.
Attempts to create a new Matrix user ID from a string representation . The string must include the leading @ sigil the localpart a literal colon and a valid server name .
fn try_from(user_id: &'a str) -> Result<UserId, Error> {
        let (localpart, host, port) = parse_id('@', user_id)?;
        let downcased_localpart = localpart.to_lowercase();
        if !USER_LOCALPART_PATTERN.is_match(&downcased_localpart) {
            return Err(Error::InvalidCharacters);
        }
        Ok(UserId {
            hostname: host,
            port: port,
            localpart: downcased_localpart.to_owned(),
        })
    }
fn try_from ( user_id : & ' a str ) -> Result < UserId , Error > { let ( localpart , host , port ) = parse_id ( '@' , user_id ) ? ; let downcased_localpart = localpart . to_lowercase ( ) ; if ! USER_LOCALPART_PATTERN . is_match ( & downcased_localpart ) { return Err ( Error :: InvalidCharacters ) ; } Ok ( UserId { hostname : host , port : port , localpart : downcased_localpart . to_owned ( ) , } ) }
Attempts to create a new Matrix user ID from a string representation.
Attempts to create a new Matrix user ID from a string representation .
user_id
&'a str