Struct stdweb::Undefined

pub struct Undefined;

A unit type representing JavaScript's undefined.

Trait Implementations

impl JsSerialize for Undefined

impl TryFrom<Undefined> for Value

type Error = Void

The type returned in the event of a conversion error.

fn try_from(source: Undefined) -> Result<Self, Self::Error>

Performs the conversion.

impl<'a> TryFrom<&'a Undefined> for Value

type Error = Void

The type returned in the event of a conversion error.

fn try_from(source: &'a Undefined) -> Result<Self, Self::Error>

Performs the conversion.

impl<'a> TryFrom<&'a mut Undefined> for Value

type Error = Void

The type returned in the event of a conversion error.

fn try_from(source: &'a mut Undefined) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for Undefined

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl From<Undefined> for Value

fn from(_: Undefined) -> Self

Performs the conversion.

impl<'a> From<&'a Undefined> for Value

fn from(_: &'a Undefined) -> Self

Performs the conversion.

impl<'a> From<&'a mut Undefined> for Value

fn from(_: &'a mut Undefined) -> Self

Performs the conversion.

impl Clone for Undefined

fn clone(&self) -> Undefined

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Undefined

impl Default for Undefined

fn default() -> Undefined

Returns the "default value" for a type.

impl Eq for Undefined

impl Ord for Undefined

fn cmp(&self, other: &Undefined) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl PartialEq<Undefined> for Undefined

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

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

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl PartialEq<Undefined> for Value

fn eq(&self, _: &Undefined) -> bool

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

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a> PartialEq<&'a Undefined> for Value

fn eq(&self, right: &&'a Undefined) -> bool

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

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a> PartialEq<Undefined> for &'a Value

fn eq(&self, right: &Undefined) -> bool

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

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl PartialEq<Value> for Undefined

fn eq(&self, right: &Value) -> bool

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

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a> PartialEq<&'a Value> for Undefined

fn eq(&self, right: &&'a Value) -> bool

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

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a> PartialEq<Value> for &'a Undefined

fn eq(&self, right: &Value) -> bool

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

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl PartialOrd<Undefined> for Undefined

fn partial_cmp(&self, other: &Undefined) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use] fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use] fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use] fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use] fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Debug for Undefined

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

Formats the value using the given formatter.

impl Hash for Undefined

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl Serialize for Undefined

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for Undefined

fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.