[][src]Struct js_sys::Iterator

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

Any object that conforms to the JS iterator protocol. For example, something returned by myArray[Symbol.iterator]().

MDN documentation

Methods

impl Iterator
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The next method always has to return an object with appropriate properties including done and value. If a non-object value gets returned (such as false or undefined), a TypeError ("iterator.next() returned a non-object value") will be thrown.

Methods from Deref<Target = JsValue>

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.

Tests whether this JS value is a JS string.

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.

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.

Tests whether this JS value is null

Tests whether this JS value is undefined

Tests whether the type of this JS value is symbol

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

Tests whether the type of this JS value is function.

Trait Implementations

impl AsRef<JsValue> for Iterator
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impl From<JsValue> for Iterator
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impl From<Iterator> for JsValue
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impl<'a> IntoIterator for &'a Iterator
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The type of the elements being iterated over.

Which kind of iterator are we turning this into?

impl IntoIterator for Iterator
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The type of the elements being iterated over.

Which kind of iterator are we turning this into?

impl Clone for Iterator
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Performs copy-assignment from source. Read more

impl Debug for Iterator
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impl Deref for Iterator
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The resulting type after dereferencing.

impl WasmDescribe for Iterator
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impl IntoWasmAbi for Iterator
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The wasm ABI type that this converts into when crossing the ABI boundary. Read more

impl<'a> IntoWasmAbi for &'a Iterator
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The wasm ABI type that this converts into when crossing the ABI boundary. Read more

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

impl OptionFromWasmAbi for Iterator
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impl RefFromWasmAbi for Iterator
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The wasm ABI type references to Self are recovered from.

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 OptionIntoWasmAbi for Iterator
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impl<'a> OptionIntoWasmAbi for &'a Iterator
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impl JsCast for Iterator
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Test whether this JS value is an instance of the type T. Read more

Performs a dynamic cast (checked at runtime) of this value into the target type T. Read more

Performs a dynamic cast (checked at runtime) of this value into the target type T. Read more

Performs a zero-cost unchecked cast into the specified type. Read more

Performs a zero-cost unchecked cast into a reference to the specified type. Read more

Auto Trait Implementations

impl !Send for Iterator

impl !Sync for Iterator

Blanket Implementations

impl<T> ToOwned for T where
    T: Clone
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impl<T> From for T
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impl<I> IntoIterator for I where
    I: Iterator
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The type of the elements being iterated over.

Which kind of iterator are we turning this into?

impl<T, U> Into for T where
    U: From<T>, 
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impl<T, U> TryFrom for T where
    T: From<U>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> Borrow for T where
    T: ?Sized
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impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> BorrowMut for T where
    T: ?Sized
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impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> ReturnWasmAbi for T where
    T: IntoWasmAbi
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Same as IntoWasmAbi::Abi