Struct IteratorNext 

#[repr(transparent)]
pub struct IteratorNext<T = JsValue> {
    pub obj: Object,
    pub generics: PhantomData<fn() -> (T,)>,
}

The result of calling next() on a JS iterator.

MDN documentation

Fields

obj: Object

generics: PhantomData<fn() -> (T,)>

Implementations

impl<T> IteratorNext<T>

pub fn done(&self) -> bool

Has the value true if the iterator is past the end of the iterated sequence. In this case value optionally specifies the return value of the iterator.

Has the value false if the iterator was able to produce the next value in the sequence. This is equivalent of not specifying the done property altogether.

impl<T> IteratorNext<T>

pub fn value(&self) -> T

where T: ErasableGenericOwn<JsValue> + EncodeTypeDef + BatchableResult,

Any JavaScript value returned by the iterator. Can be omitted when done is true.

Methods from Deref<Target = Object>

pub fn constructor(&self) -> Function

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

👎Deprecated:

Use Object::hasOwn instead.

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

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

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

MDN documentation

pub fn to_locale_string(&self) -> JsString

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

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

MDN documentation

pub fn to_js_string(&self) -> JsString

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

MDN documentation

pub fn value_of(&self) -> Object

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

MDN documentation

Methods from Deref<Target = JsValue>

pub const NULL: JsValue

pub const UNDEFINED: JsValue

pub const TRUE: JsValue

pub const FALSE: JsValue

pub fn id(&self) -> u64

Get the heap ID for this value.

This is used internally for encoding values to send to JS.

pub fn unchecked_into_f64(&self) -> f64

Returns the value as f64 without type checking. Used by serde-wasm-bindgen for numeric conversions.

pub fn has_type<T>(&self) -> bool

where T: JsCast,

Check if this value is an instance of a specific JS type.

pub fn checked_div(&self, rhs: &JsValue) -> JsValue

Checked division.

pub fn pow(&self, rhs: &JsValue) -> JsValue

Power operation.

pub fn bit_and(&self, rhs: &JsValue) -> JsValue

Bitwise AND.

pub fn bit_or(&self, rhs: &JsValue) -> JsValue

Bitwise OR.

pub fn bit_xor(&self, rhs: &JsValue) -> JsValue

Bitwise XOR.

pub fn bit_not(&self) -> JsValue

Bitwise NOT.

pub fn shl(&self, rhs: &JsValue) -> JsValue

Left shift.

pub fn shr(&self, rhs: &JsValue) -> JsValue

Signed right shift.

pub fn unsigned_shr(&self, rhs: &JsValue) -> u32

Unsigned right shift.

pub fn add(&self, rhs: &JsValue) -> JsValue

Add.

pub fn sub(&self, rhs: &JsValue) -> JsValue

Subtract.

pub fn mul(&self, rhs: &JsValue) -> JsValue

Multiply.

pub fn div(&self, rhs: &JsValue) -> JsValue

Divide.

pub fn rem(&self, rhs: &JsValue) -> JsValue

Remainder.

pub fn neg(&self) -> JsValue

Negate.

pub fn lt(&self, other: &JsValue) -> bool

Less than comparison.

pub fn le(&self, other: &JsValue) -> bool

Less than or equal comparison.

pub fn gt(&self, other: &JsValue) -> bool

Greater than comparison.

pub fn ge(&self, other: &JsValue) -> bool

Greater than or equal comparison.

pub fn loose_eq(&self, other: &JsValue) -> bool

Loose equality (==).

pub fn is_falsy(&self) -> bool

Check if this value is a falsy value in JavaScript.

pub fn is_truthy(&self) -> bool

Check if this value is a truthy value in JavaScript.

pub fn is_object(&self) -> bool

Check if this value is an object.

pub fn is_function(&self) -> bool

Check if this value is a function.

pub fn is_string(&self) -> bool

Check if this value is a string.

pub fn is_symbol(&self) -> bool

Check if this value is a symbol.

pub fn is_bigint(&self) -> bool

Check if this value is a bigint.

pub fn is_array(&self) -> bool

Check if this value is an Array.

pub fn is_undefined(&self) -> bool

Check if this value is undefined.

pub fn is_null(&self) -> bool

Check if this value is null.

pub fn is_null_or_undefined(&self) -> bool

Check if this value is null or undefined.

pub fn js_typeof(&self) -> JsValue

Get the typeof this value as a string.

pub fn js_in(&self, obj: &JsValue) -> bool

Check if this value has a property with the given name.

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

Get the value as a bool.

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

Get the value as an f64.

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

Get the value as a string.

pub fn as_debug_string(&self) -> String

Get a debug string representation of the value.

Trait Implementations

impl<T> AsRef<IteratorNext<T>> for IteratorNext<T>

fn as_ref(&self) -> &IteratorNext<T>

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

impl<T> AsRef<JsValue> for IteratorNext<T>

fn as_ref(&self) -> &JsValue

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

impl<T> AsRef<Object> for IteratorNext<T>

fn as_ref(&self) -> &Object

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

impl<T> BatchableResult for IteratorNext<T>

fn try_placeholder(batch: &mut Runtime) -> Option<Self>

Returns Some(placeholder) for opaque types that can be batched, None for types that require flushing to get the actual value.

impl<T> BinaryDecode for IteratorNext<T>

fn decode(decoder: &mut DecodedData<'_>) -> Result<Self, DecodeError>

impl<T> BinaryEncode for IteratorNext<T>

fn encode(self, encoder: &mut EncodedData)

impl<T: Clone> Clone for IteratorNext<T>

fn clone(&self) -> IteratorNext<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for IteratorNext<T>

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

Formats the value using the given formatter.

impl<T> Deref for IteratorNext<T>

type Target = Object

The resulting type after dereferencing.

fn deref(&self) -> &Object

Dereferences the value.

impl<T> EncodeTypeDef for IteratorNext<T>

fn encode_type_def(buf: &mut Vec<u8>)

Encode this type’s definition into the buffer. For primitives, this is just the TypeTag byte. For callbacks, this includes param count, param types, and return type.

impl<T> ErasableGeneric for IteratorNext<T>

type Repr = JsValue

impl<T> From<IteratorNext<T>> for JsValue

fn from(val: IteratorNext<T>) -> Self

Converts to this type from the input type.

impl<T> From<IteratorNext<T>> for Object

fn from(val: IteratorNext<T>) -> Object

Converts to this type from the input type.

impl<T> From<JsValue> for IteratorNext<T>

fn from(val: JsValue) -> Self

Converts to this type from the input type.

impl<T: 'static> IntoJsGeneric for IteratorNext<T>

where IteratorNext<T>: JsGeneric,

type JsCanon = IteratorNext<T>

fn to_js(self) -> Self::JsCanon

impl<T> JsCast for IteratorNext<T>

fn instanceof(__val: &JsValue) -> bool

Check if a JsValue is an instance of this type.

fn unchecked_from_js(val: JsValue) -> Self

Unchecked cast from JsValue to this type.

fn unchecked_from_js_ref(val: &JsValue) -> &Self

Unchecked cast from a JsValue reference to a reference of this type.

fn is_type_of(val: &JsValue) -> bool

Performs a dynamic type check to see whether the JsValue provided is a value of this type.

fn has_type<T>(&self) -> bool

where T: JsCast,

Test whether this JS value has a type T.

fn dyn_into<T>(self) -> Result<T, Self>

where T: JsCast,

Try to cast this value to type T.

fn dyn_ref<T>(&self) -> Option<&T>

where T: JsCast,

Try to get a reference to type T from this value.

fn is_instance_of<T>(&self) -> bool

where T: JsCast,

Test whether this JS value is an instance of the type T.

fn unchecked_into<T>(self) -> T

where T: JsCast,

Unchecked cast to another type.

fn unchecked_ref<T>(&self) -> &T

where T: JsCast,

Unchecked cast to a reference of another type.

impl<T: PartialEq> PartialEq for IteratorNext<T>

fn eq(&self, other: &IteratorNext<T>) -> 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<T> Promising for IteratorNext<T>

type Resolution = IteratorNext<T>

impl<T: Eq> Eq for IteratorNext<T>

impl<T> StructuralPartialEq for IteratorNext<T>

impl<T, __WryUpcastTarget0> UpcastFrom<IteratorNext<T>> for IteratorNext<__WryUpcastTarget0>

where __WryUpcastTarget0: UpcastFrom<T>,

impl<T> UpcastFrom<IteratorNext<T>> for JsOption<JsValue>

impl<T, __WryUpcastTarget0> UpcastFrom<IteratorNext<T>> for JsOption<IteratorNext<__WryUpcastTarget0>>

where __WryUpcastTarget0: UpcastFrom<T>,

impl<T> UpcastFrom<IteratorNext<T>> for JsOption<Object>

impl<T> UpcastFrom<IteratorNext<T>> for JsValue

impl<T> UpcastFrom<IteratorNext<T>> for Object