Struct Object

pub struct Object(/* private fields */);

A type representing a JavaScript object.

Implementations

impl Object

pub fn len(&self) -> usize

Returns the number of elements in this particular object.

pub fn to_iter(&self) -> impl ExactSizeIterator<Item = (String, Value)>

Retrieves an iterator over this object’s keys and values.

When called, this method will pull all the objecy’s keys and values from JavaScript, then return an iterator which accesses them in pairs.

Example:

use stdweb::{ js, unstable::TryInto, Object };

let obj: Object = js!( return { [1]: 2 } ).try_into()?;

let map: HashMap< i32, i32 > = obj
    .to_iter()
    .map( |(k, v)| Ok( ( k.parse()?, v.try_into()? ) ) )
    .collect::< Result< _, Box< dyn std::error::Error > > >()?;

assert_eq!( map[ &1 ], 2 );
panic!("ahhh");

Trait Implementations

impl AsRef<Reference> for Object

fn as_ref(&self) -> &Reference

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for Object

fn clone(&self) -> Object

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Object

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

Formats the value using the given formatter.

impl<'a, K, V> From<&'a BTreeMap<K, V>> for Object

where K: AsRef<str>, V: JsSerialize,

fn from(value: &'a BTreeMap<K, V>) -> Self

Converts to this type from the input type.

impl<'a, K, V> From<&'a HashMap<K, V>> for Object

where K: AsRef<str> + Hash + Eq, V: JsSerialize,

fn from(value: &'a HashMap<K, V>) -> Self

Converts to this type from the input type.

impl<'a> From<&'a Object> for BTreeMap<String, Value>

fn from(object: &'a Object) -> Self

Converts to this type from the input type.

impl<'a> From<&'a Object> for HashMap<String, Value>

fn from(object: &'a Object) -> Self

Converts to this type from the input type.

impl<'a, K, V> From<&'a mut BTreeMap<K, V>> for Object

where K: AsRef<str>, V: JsSerialize,

fn from(value: &'a mut BTreeMap<K, V>) -> Self

Converts to this type from the input type.

impl<'a, K, V> From<&'a mut HashMap<K, V>> for Object

where K: AsRef<str> + Hash + Eq, V: JsSerialize,

fn from(value: &'a mut HashMap<K, V>) -> Self

Converts to this type from the input type.

impl<'a> From<&'a mut Object> for BTreeMap<String, Value>

fn from(object: &'a mut Object) -> Self

Converts to this type from the input type.

impl<'a> From<&'a mut Object> for HashMap<String, Value>

fn from(object: &'a mut Object) -> Self

Converts to this type from the input type.

impl<K: AsRef<str>, V: JsSerialize> From<BTreeMap<K, V>> for Object

fn from(value: BTreeMap<K, V>) -> Self

Converts to this type from the input type.

impl<K, V> From<HashMap<K, V>> for Object

where K: AsRef<str> + Hash + Eq, V: JsSerialize,

fn from(value: HashMap<K, V>) -> Self

Converts to this type from the input type.

impl From<Object> for BTreeMap<String, Value>

fn from(object: Object) -> Self

Converts to this type from the input type.

impl From<Object> for HashMap<String, Value>

fn from(object: Object) -> Self

Converts to this type from the input type.

impl From<Object> for Reference

fn from(value: Object) -> Self

Converts to this type from the input type.

impl InstanceOf for Object

fn instance_of(reference: &Reference) -> bool

Checks whenever a given Reference if of type Self.

impl PartialEq for Object

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ReferenceType for Object

unsafe fn from_reference_unchecked(reference: Reference) -> Self

Converts a given reference into a concrete reference-like wrapper. Doesn’t do any type checking; highly unsafe to use!

impl<'a, K, V> TryFrom<&'a BTreeMap<K, V>> for Object

where K: AsRef<str>, V: JsSerialize,

type Error = Void

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<'a, K, V> TryFrom<&'a HashMap<K, V>> for Object

where K: AsRef<str> + Eq + Hash, V: JsSerialize,

type Error = Void

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<'_r> TryFrom<&'_r Reference> for Object

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(reference: &Reference) -> Result<Self, Self::Error>

Performs the conversion.

impl<'_r> TryFrom<&'_r Value> for Object

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<'a, K, V> TryFrom<&'a mut BTreeMap<K, V>> for Object

where K: AsRef<str>, V: JsSerialize,

type Error = Void

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<'a, K, V> TryFrom<&'a mut HashMap<K, V>> for Object

where K: AsRef<str> + Eq + Hash, V: JsSerialize,

type Error = Void

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<K, V> TryFrom<BTreeMap<K, V>> for Object

where K: AsRef<str>, V: JsSerialize,

type Error = Void

The type returned in the event of a conversion error.

fn try_from(source: BTreeMap<K, V>) -> Result<Self, Self::Error>

Performs the conversion.

impl<K, V> TryFrom<HashMap<K, V>> for Object

where K: AsRef<str> + Eq + Hash, V: JsSerialize,

type Error = Void

The type returned in the event of a conversion error.

fn try_from(source: HashMap<K, V>) -> Result<Self, Self::Error>

Performs the conversion.

impl<E: Into<ConversionError>, V: TryFrom<Value, Error = E>> TryFrom<Object> for BTreeMap<String, V>

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(object: Object) -> Result<Self, Self::Error>

Performs the conversion.

impl<E: Into<ConversionError>, V: TryFrom<Value, Error = E>> TryFrom<Object> for HashMap<String, V>

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(object: Object) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Object> for Reference

type Error = Void

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<Reference> for Object

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(reference: Reference) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for Object

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 Eq for Object

impl JsSerialize for Object

impl StructuralPartialEq for Object