# Error code E0797

Struct update syntax was used without a base expression.

Erroneous code example:

    #![allow(unused)]
    fn main() {
    struct Foo {
        fizz: u8,
        buzz: u8
    }

    let f1 = Foo { fizz: 10, buzz: 1};
    let f2 = Foo { fizz: 10, .. }; // error
    }

Using struct update syntax requires a 'base expression'. This will be used to fill remaining fields.

    #![allow(unused)]
    fn main() {
    struct Foo {
        fizz: u8,
        buzz: u8
    }

    let f1 = Foo { fizz: 10, buzz: 1};
    let f2 = Foo { fizz: 10, ..f1 };
    }