## Keyboard shortcuts

Press `←` or `→` to navigate between chapters

Press `S` or `/` to search in the book

Press `?` to show this help

Press `Esc` to hide this help

# Error code E0063

A struct’s or struct-like enum variant’s field was not provided.

Erroneous code example:

    struct Foo {
        x: i32,
        y: i32,
    }

    fn main() {
        let x = Foo { x: 0 }; // error: missing field: `y`
    }

Each field should be specified exactly once. Example:

    struct Foo {
        x: i32,
        y: i32,
    }

    fn main() {
        let x = Foo { x: 0, y: 0 }; // ok!
    }