Trait Null

pub trait Null {
    const NULL: Self;

    // Required method
    fn is_null(&self) -> bool;
}

For more expressive code and for use with trait bounds.

Required Associated Constants

const NULL: Self

Required Methods

fn is_null(&self) -> bool

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl Null for PCSTR

const NULL: Self

fn is_null(&self) -> bool

impl Null for PCWSTR

const NULL: Self

fn is_null(&self) -> bool

impl Null for PSTR

const NULL: Self

fn is_null(&self) -> bool

impl Null for PWSTR

const NULL: Self

fn is_null(&self) -> bool

impl Null for HACCEL

const NULL: Self

fn is_null(&self) -> bool

impl Null for HANDLE

const NULL: Self

fn is_null(&self) -> bool

impl Null for HBITMAP

const NULL: Self

fn is_null(&self) -> bool

impl Null for HBRUSH

const NULL: Self

fn is_null(&self) -> bool

impl Null for HCURSOR

const NULL: Self

fn is_null(&self) -> bool

impl Null for HDC

const NULL: Self

fn is_null(&self) -> bool

impl Null for HDEVNOTIFY

const NULL: Self

fn is_null(&self) -> bool

impl Null for HDROP

const NULL: Self

fn is_null(&self) -> bool

impl Null for HDWP

const NULL: Self

fn is_null(&self) -> bool

impl Null for HENHMETAFILE

const NULL: Self

fn is_null(&self) -> bool

impl Null for HFONT

const NULL: Self

fn is_null(&self) -> bool

impl Null for HGDIOBJ

const NULL: Self

fn is_null(&self) -> bool

impl Null for HGLOBAL

const NULL: Self

fn is_null(&self) -> bool

impl Null for HHOOK

const NULL: Self

fn is_null(&self) -> bool

impl Null for HICON

const NULL: Self

fn is_null(&self) -> bool

impl Null for HINSTANCE

const NULL: Self

fn is_null(&self) -> bool

impl Null for HLOCAL

const NULL: Self

fn is_null(&self) -> bool

impl Null for HMENU

const NULL: Self

fn is_null(&self) -> bool

impl Null for HMETAFILE

const NULL: Self

fn is_null(&self) -> bool

impl Null for HMODULE

const NULL: Self

fn is_null(&self) -> bool

impl Null for HMONITOR

const NULL: Self

fn is_null(&self) -> bool

impl Null for HPALETTE

const NULL: Self

fn is_null(&self) -> bool

impl Null for HPEN

const NULL: Self

fn is_null(&self) -> bool

impl Null for HPOWERNOTIFY

const NULL: Self

fn is_null(&self) -> bool

impl Null for HPSXA

const NULL: Self

fn is_null(&self) -> bool

impl Null for HRGN

const NULL: Self

fn is_null(&self) -> bool

impl Null for HRSRC

const NULL: Self

fn is_null(&self) -> bool

impl Null for HWND

const NULL: Self

fn is_null(&self) -> bool

impl Null for NCRYPT_DESCRIPTOR_HANDLE

const NULL: Self

fn is_null(&self) -> bool

impl Null for NCRYPT_STREAM_HANDLE

const NULL: Self

fn is_null(&self) -> bool

impl Null for PSECURITY_DESCRIPTOR

const NULL: Self

fn is_null(&self) -> bool

impl Null for PSID

const NULL: Self

fn is_null(&self) -> bool

impl Null for SAFER_LEVEL_HANDLE

const NULL: Self

fn is_null(&self) -> bool

Implementors