Structs#
Three forms.
Named-field struct.
struct User { id: u32, name: String }
let u = User { id: 1, name: "rk".into() };
Tuple struct.
struct Point(i32, i32);
let p = Point(3, 4);
Unit struct; no data, just a type tag.
struct Marker;
Struct update syntax keeps the original fields and overrides some.
let v2 = User { name: "operator".into(), ..u };