Struct js_sys::Set[][src]

#[repr(transparent)]pub struct Set { /* fields omitted */ }

Implementations

impl Set[src]

pub fn add(&self, value: &JsValue) -> Set[src]

The add() method appends a new element with a specified value to the end of a Set object.

MDN documentation

impl Set[src]

pub fn clear(&self)[src]

The clear() method removes all elements from a Set object.

MDN documentation

impl Set[src]

pub fn delete(&self, value: &JsValue) -> bool[src]

The delete() method removes the specified element from a Set object.

MDN documentation

impl Set[src]

pub fn for_each(&self, callback: &mut dyn FnMut(JsValue, JsValue, Set))[src]

The forEach() method executes a provided function once for each value in the Set object, in insertion order.

MDN documentation

impl Set[src]

pub fn has(&self, value: &JsValue) -> bool[src]

The has() method returns a boolean indicating whether an element with the specified value exists in a Set object or not.

MDN documentation

impl Set[src]

pub fn new(init: &JsValue) -> Set[src]

The Set object lets you store unique values of any type, whether primitive values or object references.

MDN documentation

impl Set[src]

pub fn size(&self) -> u32[src]

The size accessor property returns the number of elements in a Set object.

MDN documentation

impl Set[src]

pub fn entries(&self) -> Iterator[src]

The entries() method returns a new Iterator object that contains an array of [value, value] for each element in the Set object, in insertion order. For Set objects there is no key like in Map objects. However, to keep the API similar to the Map object, each entry has the same value for its key and value here, so that an array [value, value] is returned.

MDN documentation

impl Set[src]

pub fn keys(&self) -> Iterator[src]

The keys() method is an alias for this method (for similarity with Map objects); it behaves exactly the same and returns values of Set elements.

MDN documentation

impl Set[src]

pub fn values(&self) -> Iterator[src]

The values() method returns a new Iterator object that contains the values for each element in the Set object in insertion order.

MDN documentation

Methods from Deref<Target = Object>

pub fn constructor(&self) -> Function[src]

The constructor property returns a reference to the Object constructor function that created the instance object.

MDN documentation

pub fn has_own_property(&self, property: &JsValue) -> bool[src]

The hasOwnProperty() method returns a boolean indicating whether the object has the specified property as its own property (as opposed to inheriting it).

MDN documentation

pub fn is_prototype_of(&self, value: &JsValue) -> bool[src]

The isPrototypeOf() method checks if an object exists in another object’s prototype chain.

MDN documentation

pub fn property_is_enumerable(&self, property: &JsValue) -> bool[src]

The propertyIsEnumerable() method returns a Boolean indicating whether the specified property is enumerable.

MDN documentation

pub fn to_locale_string(&self) -> JsString[src]

The toLocaleString() method returns a string representing the object. This method is meant to be overridden by derived objects for locale-specific purposes.

MDN documentation

pub fn to_string(&self) -> JsString[src]

The toString() method returns a string representing the object.

MDN documentation

pub fn value_of(&self) -> Object[src]

The valueOf() method returns the primitive value of the specified object.

MDN documentation

Methods from Deref<Target = JsValue>

pub const NULL: JsValue[src]

pub const UNDEFINED: JsValue[src]

pub const TRUE: JsValue[src]

pub const FALSE: JsValue[src]

pub fn as_f64(&self) -> Option<f64>[src]

Returns the f64 value of this JS value if it’s an instance of a number.

If this JS value is not an instance of a number then this returns None.

pub fn is_string(&self) -> bool[src]

Tests whether this JS value is a JS string.

pub fn as_string(&self) -> Option<String>[src]

If this JS value is a string value, this function copies the JS string value into wasm linear memory, encoded as UTF-8, and returns it as a Rust String.

To avoid the copying and re-encoding, consider the JsString::try_from() function from js-sys instead.

If this JS value is not an instance of a string or if it’s not valid utf-8 then this returns None.

UTF-16 vs UTF-8

JavaScript strings in general are encoded as UTF-16, but Rust strings are encoded as UTF-8. This can cause the Rust string to look a bit different than the JS string sometimes. For more details see the documentation about the str type which contains a few caveats about the encodings.

pub fn as_bool(&self) -> Option<bool>[src]

Returns the bool value of this JS value if it’s an instance of a boolean.

If this JS value is not an instance of a boolean then this returns None.

pub fn is_null(&self) -> bool[src]

Tests whether this JS value is null

pub fn is_undefined(&self) -> bool[src]

Tests whether this JS value is undefined

pub fn is_symbol(&self) -> bool[src]

Tests whether the type of this JS value is symbol

pub fn is_object(&self) -> bool[src]

Tests whether typeof self == "object" && self !== null.

pub fn is_function(&self) -> bool[src]

Tests whether the type of this JS value is function.

pub fn is_truthy(&self) -> bool[src]

Tests whether the value is “truthy”.

pub fn is_falsy(&self) -> bool[src]

Tests whether the value is “falsy”.

Trait Implementations

impl AsRef<JsValue> for Set[src]

impl AsRef<Object> for Set[src]

impl AsRef<Set> for Set[src]

impl Clone for Set[src]

impl Debug for Set[src]

impl Deref for Set[src]

type Target = Object

The resulting type after dereferencing.

impl Eq for Set[src]

impl From<JsValue> for Set[src]

impl From<Set> for JsValue[src]

impl From<Set> for Object[src]

impl FromWasmAbi for Set[src]

type Abi = <JsValue as FromWasmAbi>::Abi

The wasm ABI type that this converts from when coming back out from the ABI boundary. Read more

impl IntoWasmAbi for Set[src]

type Abi = <JsValue as IntoWasmAbi>::Abi

The wasm ABI type that this converts into when crossing the ABI boundary. Read more

impl<'a> IntoWasmAbi for &'a Set[src]

type Abi = <&'a JsValue as IntoWasmAbi>::Abi

The wasm ABI type that this converts into when crossing the ABI boundary. Read more

impl JsCast for Set[src]

impl OptionFromWasmAbi for Set[src]

impl OptionIntoWasmAbi for Set[src]

impl<'a> OptionIntoWasmAbi for &'a Set[src]

impl PartialEq<Set> for Set[src]

impl RefFromWasmAbi for Set[src]

type Abi = <JsValue as RefFromWasmAbi>::Abi

The wasm ABI type references to Self are recovered from.

type Anchor = ManuallyDrop<Set>

The type that holds the reference to Self for the duration of the invocation of the function that has an &Self parameter. This is required to ensure that the lifetimes don’t persist beyond one function call, and so that they remain anonymous. Read more

impl StructuralEq for Set[src]

impl StructuralPartialEq for Set[src]

impl WasmDescribe for Set[src]

Auto Trait Implementations

impl RefUnwindSafe for Set

impl !Send for Set

impl !Sync for Set

impl Unpin for Set

impl UnwindSafe for Set

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> ReturnWasmAbi for T where
    T: IntoWasmAbi
[src]

type Abi = <T as IntoWasmAbi>::Abi

Same as IntoWasmAbi::Abi

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.