Struct rquickjs_core::Undefined

pub struct Undefined;

The placeholder which treated as undefined value

Implementations

impl Undefined

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

Convert into value

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

Convert from value

Trait Implementations

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 Debug for Undefined

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

Formats the value using the given formatter.

impl<'js> FromJs<'js> for Undefined

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

impl<'js> IntoJs<'js> for Undefined

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

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 ==.

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.

impl Copy for Undefined

impl Eq for Undefined

impl StructuralEq for Undefined

impl StructuralPartialEq for Undefined