Struct JavascriptArray 

pub struct JavascriptArray { /* private fields */ }

ECMAScript array with explicit holes distinct from undefined.

Implementations

impl JavascriptArray

pub fn dense(values: Vec<JavascriptValue>) -> Self

Construct a dense array.

pub fn sparse(length: usize) -> Self

Construct with an explicit length and holes.

pub fn len(&self) -> usize

ECMAScript length.

pub fn is_empty(&self) -> bool

Whether length is zero.

pub fn get(&self, index: usize) -> Option<&JavascriptValue>

Read an own indexed element; holes remain distinguishable.

pub fn set(&mut self, index: usize, value: JavascriptValue)

Set an index, growing through holes as JavaScript arrays do.

pub fn push(&mut self, value: JavascriptValue) -> usize

Append and return the new length.

pub fn pop(&mut self) -> Option<JavascriptValue>

Remove and return the last element (undefined and a hole both return None at this policy seam).

pub fn values(&self) -> JavascriptIterator

JavaScript array iterator: holes are observed as undefined.

pub fn map( &self, max_visits: usize, f: impl FnMut(&JavascriptValue, usize) -> JavascriptValue, ) -> Result<Self, JavascriptCollectionError>

Bounded map; callbacks skip holes and holes are retained.

pub fn filter( &self, max_visits: usize, f: impl FnMut(&JavascriptValue, usize) -> bool, ) -> Result<Self, JavascriptCollectionError>

Bounded filter; callbacks skip holes and the result is dense.

Trait Implementations

impl Clone for JavascriptArray

fn clone(&self) -> JavascriptArray

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JavascriptArray

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

Formats the value using the given formatter.

impl Default for JavascriptArray

fn default() -> JavascriptArray

Returns the “default value” for a type.

impl PartialEq for JavascriptArray

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for JavascriptArray