Struct Constructor

To initialize struct, Struct constructor can be used instead of assigning each members. This is especially useful to initialize const because it can’t be assigned by each members.

..default specifier can speficy the default value for unspecified members in the struct.

module ModuleA {
    struct Param {
        a: bit<10>,
        b: bit<10>,
    }

    const p: Param = Param'{a: 10, b: 10,};

    const q: Param = Param'{
        a: 1,
        ..default(0) // means `b: 0`
    };
}