Function tao_of_rust::ch03::zero_size::zero_size

pub fn zero_size()

零大小类型：

Base usage:

fn zero_size(){
    enum Void {}
    struct Foo;
    struct Baz {
        foo: Foo,
        qux: (),
        baz: [u8; 0],
    }
    assert_eq!(std::mem::size_of::<()>(), 0);
    assert_eq!(std::mem::size_of::<Foo>(), 0);
    assert_eq!(std::mem::size_of::<Baz>(), 0);
    assert_eq!(std::mem::size_of::<Void>(), 0);
    assert_eq!(std::mem::size_of::<[(); 10]>(), 0);
}
zero_size();