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", so this trait is not object safe.

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> 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<'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<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<'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