Struct rquickjs::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<Undefined, Error>

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<(), Error>

Formats the value using the given formatter.

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

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

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

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

impl PartialEq 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 StructuralPartialEq for Undefined