Struct rquickjs_core::Null

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pub struct Null;

Expand description

The placeholder which treated as null value

Implementations

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impl Null

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pub fn into_value<'js>(self, ctx: Ctx<'js>) -> Value<'js>

Convert into value

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pub fn from_value<'js>(value: Value<'js>) -> Result<Self>

Convert from value

Trait Implementations

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impl Clone for Null

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fn clone(&self) -> Null

Returns a copy of the value. Read more

1.0.0 · source

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Debug for Null

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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fn eq(&self, other: &Null) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

1.0.0 · source

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more

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impl Copy for Null

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impl Eq for Null

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impl StructuralEq for Null

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impl StructuralPartialEq for Null

Auto Trait Implementations

impl RefUnwindSafe for Null

impl Send for Null

impl Sync for Null

impl Unpin for Null

impl UnwindSafe for Null

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct rquickjs_core::Null

Implementations

impl Null

pub fn into_value<'js>(self, ctx: Ctx<'js>) -> Value<'js>

pub fn from_value<'js>(value: Value<'js>) -> Result<Self>

Trait Implementations

impl Clone for Null

fn clone(&self) -> Null

fn clone_from(&mut self, source: &Self)

impl Debug for Null

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl<'js> FromJs<'js> for Null

fn from_js(_: Ctx<'js>, value: Value<'js>) -> Result<Self>

impl<'js> IntoJs<'js> for Null

fn into_js(self, ctx: Ctx<'js>) -> Result<Value<'js>>

impl PartialEq<Null> for Null

fn eq(&self, other: &Null) -> bool

fn ne(&self, other: &Rhs) -> bool

impl Copy for Null

impl Eq for Null

impl StructuralEq for Null

impl StructuralPartialEq for Null

Auto Trait Implementations

impl RefUnwindSafe for Null

impl Send for Null

impl Sync for Null

impl Unpin for Null

impl UnwindSafe for Null

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<Q, K> Equivalent<K> for Q where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

fn equivalent(&self, key: &K) -> bool

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,