Trait IsNull 

pub trait IsNull {
    type Inner;

    const HAS_NULLS: bool;

    // Required methods
    fn is_null(&self) -> bool;
    fn unwrap_inner(self) -> Self::Inner;
}

Required Associated Constants

const HAS_NULLS: bool

Required Associated Types

type Inner

Required Methods

fn is_null(&self) -> bool

fn unwrap_inner(self) -> Self::Inner

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl IsNull for bool

const HAS_NULLS: bool = false

type Inner = bool

fn is_null(&self) -> bool

fn unwrap_inner(self) -> bool

impl IsNull for f32

const HAS_NULLS: bool = false

type Inner = f32

fn is_null(&self) -> bool

fn unwrap_inner(self) -> f32

impl IsNull for f64

const HAS_NULLS: bool = false

type Inner = f64

fn is_null(&self) -> bool

fn unwrap_inner(self) -> f64

impl IsNull for i8

const HAS_NULLS: bool = false

type Inner = i8

fn is_null(&self) -> bool

fn unwrap_inner(self) -> i8

impl IsNull for i16

const HAS_NULLS: bool = false

type Inner = i16

fn is_null(&self) -> bool

fn unwrap_inner(self) -> i16

impl IsNull for i32

const HAS_NULLS: bool = false

type Inner = i32

fn is_null(&self) -> bool

fn unwrap_inner(self) -> i32

impl IsNull for i64

const HAS_NULLS: bool = false

type Inner = i64

fn is_null(&self) -> bool

fn unwrap_inner(self) -> i64

impl IsNull for i128

const HAS_NULLS: bool = false

type Inner = i128

fn is_null(&self) -> bool

fn unwrap_inner(self) -> i128

impl IsNull for u8

const HAS_NULLS: bool = false

type Inner = u8

fn is_null(&self) -> bool

fn unwrap_inner(self) -> u8

impl IsNull for u16

const HAS_NULLS: bool = false

type Inner = u16

fn is_null(&self) -> bool

fn unwrap_inner(self) -> u16

impl IsNull for u32

const HAS_NULLS: bool = false

type Inner = u32

fn is_null(&self) -> bool

fn unwrap_inner(self) -> u32

impl IsNull for u64

const HAS_NULLS: bool = false

type Inner = u64

fn is_null(&self) -> bool

fn unwrap_inner(self) -> u64

impl IsNull for u128

const HAS_NULLS: bool = false

type Inner = u128

fn is_null(&self) -> bool

fn unwrap_inner(self) -> u128

impl<'a, T: IsNull + ?Sized> IsNull for &'a T

const HAS_NULLS: bool = false

type Inner = &'a T

fn is_null(&self) -> bool

fn unwrap_inner(self) -> Self::Inner

impl<'a> IsNull for &'a [u8]

const HAS_NULLS: bool = false

type Inner = &'a [u8]

fn is_null(&self) -> bool

fn unwrap_inner(self) -> Self::Inner

impl<T> IsNull for Option<T>

const HAS_NULLS: bool = true

type Inner = T

fn is_null(&self) -> bool

fn unwrap_inner(self) -> Self::Inner

Implementors

impl IsNull for pf16

const HAS_NULLS: bool = false

type Inner = pf16

impl<'a> IsNull for BytesHash<'a>

const HAS_NULLS: bool = true

type Inner = BytesHash<'a>

impl<T: IsNull> IsNull for TotalOrdWrap<T>

const HAS_NULLS: bool = T::HAS_NULLS

type Inner = <T as IsNull>::Inner