#[repr(transparent)]pub struct Array { /* private fields */ }
Expand description
Implementations§
source§impl Array
impl Array
sourcepub fn new_with_length(len: u32) -> Array
pub fn new_with_length(len: u32) -> Array
Creates a new array with the specified length (elements are initialized to undefined
).
source§impl Array
impl Array
source§impl Array
impl Array
source§impl Array
impl Array
source§impl Array
impl Array
source§impl Array
impl Array
source§impl Array
impl Array
source§impl Array
impl Array
sourcepub fn last_index_of(&self, value: &JsValue, from_index: i32) -> i32
pub fn last_index_of(&self, value: &JsValue, from_index: i32) -> i32
The lastIndexOf()
method returns the last index at which a given element
can be found in the array, or -1 if it is not present. The array is
searched backwards, starting at fromIndex.
source§impl Array
impl Array
source§impl Array
impl Array
sourcepub fn set_length(&self, value: u32)
pub fn set_length(&self, value: u32)
Sets the length of the array.
If it is set to less than the current length of the array, it will shrink the array.
If it is set to more than the current length of the array, it will increase the length of the array, filling the new space with empty slots.
source§impl Array
impl Array
sourcepub fn map(
&self,
predicate: &mut dyn FnMut(JsValue, u32, Array) -> JsValue
) -> Array
pub fn map( &self, predicate: &mut dyn FnMut(JsValue, u32, Array) -> JsValue ) -> Array
map()
calls a provided callback function once for each element in an array,
in order, and constructs a new array from the results. callback is invoked
only for indexes of the array which have assigned values, including undefined.
It is not called for missing elements of the array (that is, indexes that have
never been set, which have been deleted or which have never been assigned a value).
source§impl Array
impl Array
sourcepub fn of1(a: &JsValue) -> Array
pub fn of1(a: &JsValue) -> Array
The Array.of()
method creates a new Array instance with a variable
number of arguments, regardless of number or type of the arguments.
The difference between Array.of()
and the Array
constructor is in the
handling of integer arguments: Array.of(7)
creates an array with a single
element, 7
, whereas Array(7)
creates an empty array with a length
property of 7
(Note: this implies an array of 7 empty slots, not slots
with actual undefined values).
Notes
There are a few bindings to of
in js-sys
: of1
, of2
, etc…
with different arities.
source§impl Array
impl Array
source§impl Array
impl Array
source§impl Array
impl Array
source§impl Array
impl Array
source§impl Array
impl Array
source§impl Array
impl Array
sourcepub fn sort(&self) -> Array
pub fn sort(&self) -> Array
The sort()
method sorts the elements of an array in place and returns
the array. The sort is not necessarily stable. The default sort
order is according to string Unicode code points.
The time and space complexity of the sort cannot be guaranteed as it is implementation dependent.
source§impl Array
impl Array
sourcepub fn to_locale_string(&self, locales: &JsValue, options: &JsValue) -> JsString
pub fn to_locale_string(&self, locales: &JsValue, options: &JsValue) -> JsString
The toLocaleString()
method returns a string representing the elements of the array.
The elements are converted to Strings using their toLocaleString methods and these
Strings are separated by a locale-specific String (such as a comma “,”).
source§impl Array
impl Array
source§impl Array
impl Array
source§impl Array
impl Array
Methods from Deref<Target = Object>§
sourcepub fn constructor(&self) -> Function
pub fn constructor(&self) -> Function
The constructor property returns a reference to the Object
constructor
function that created the instance object.
sourcepub fn has_own_property(&self, property: &JsValue) -> bool
pub fn has_own_property(&self, property: &JsValue) -> bool
The hasOwnProperty()
method returns a boolean indicating whether the
object has the specified property as its own property (as opposed to
inheriting it).
sourcepub fn is_prototype_of(&self, value: &JsValue) -> bool
pub fn is_prototype_of(&self, value: &JsValue) -> bool
The isPrototypeOf()
method checks if an object exists in another
object’s prototype chain.
sourcepub fn property_is_enumerable(&self, property: &JsValue) -> bool
pub fn property_is_enumerable(&self, property: &JsValue) -> bool
The propertyIsEnumerable()
method returns a Boolean indicating
whether the specified property is enumerable.
sourcepub fn to_locale_string(&self) -> JsString
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.
sourcepub fn to_string(&self) -> JsString
pub fn to_string(&self) -> JsString
The toString()
method returns a string representing the object.
Methods from Deref<Target = JsValue>§
pub const NULL: JsValue = JsValue::_new(JSIDX_NULL)
pub const UNDEFINED: JsValue = JsValue::_new(JSIDX_UNDEFINED)
pub const TRUE: JsValue = JsValue::_new(JSIDX_TRUE)
pub const FALSE: JsValue = JsValue::_new(JSIDX_FALSE)
sourcepub fn as_f64(&self) -> Option<f64>
pub fn as_f64(&self) -> Option<f64>
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
.
sourcepub fn as_string(&self) -> Option<String>
pub fn as_string(&self) -> Option<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
.
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.
sourcepub fn as_bool(&self) -> Option<bool>
pub fn as_bool(&self) -> Option<bool>
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
.
sourcepub fn is_undefined(&self) -> bool
pub fn is_undefined(&self) -> bool
Tests whether this JS value is undefined
sourcepub fn is_function(&self) -> bool
pub fn is_function(&self) -> bool
Tests whether the type of this JS value is function
.
sourcepub fn js_in(&self, obj: &JsValue) -> bool
pub fn js_in(&self, obj: &JsValue) -> bool
Applies the binary in
JS operator on the two JsValue
s.
sourcepub fn loose_eq(&self, other: &JsValue) -> bool
pub fn loose_eq(&self, other: &JsValue) -> bool
Compare two JsValue
s for equality, using the ==
operator in JS.
sourcepub fn unsigned_shr(&self, rhs: &JsValue) -> u32
pub fn unsigned_shr(&self, rhs: &JsValue) -> u32
Applies the binary >>>
JS operator on the two JsValue
s.
sourcepub fn checked_div(&self, rhs: &JsValue) -> JsValue
pub fn checked_div(&self, rhs: &JsValue) -> JsValue
Applies the binary /
JS operator on two JsValue
s, catching and returning any RangeError
thrown.
sourcepub fn pow(&self, rhs: &JsValue) -> JsValue
pub fn pow(&self, rhs: &JsValue) -> JsValue
Applies the binary **
JS operator on the two JsValue
s.
sourcepub fn lt(&self, other: &JsValue) -> bool
pub fn lt(&self, other: &JsValue) -> bool
Applies the binary <
JS operator on the two JsValue
s.
sourcepub fn le(&self, other: &JsValue) -> bool
pub fn le(&self, other: &JsValue) -> bool
Applies the binary <=
JS operator on the two JsValue
s.
sourcepub fn ge(&self, other: &JsValue) -> bool
pub fn ge(&self, other: &JsValue) -> bool
Applies the binary >=
JS operator on the two JsValue
s.
sourcepub fn gt(&self, other: &JsValue) -> bool
pub fn gt(&self, other: &JsValue) -> bool
Applies the binary >
JS operator on the two JsValue
s.
sourcepub fn unchecked_into_f64(&self) -> f64
pub fn unchecked_into_f64(&self) -> f64
Applies the unary +
JS operator on a JsValue
. Can throw.
Trait Implementations§
source§impl<A> Extend<A> for Arraywhere
A: AsRef<JsValue>,
impl<A> Extend<A> for Arraywhere A: AsRef<JsValue>,
source§fn extend<T>(&mut self, iter: T)where
T: IntoIterator<Item = A>,
fn extend<T>(&mut self, iter: T)where T: IntoIterator<Item = A>,
source§fn extend_one(&mut self, item: A)
fn extend_one(&mut self, item: A)
extend_one
)source§fn extend_reserve(&mut self, additional: usize)
fn extend_reserve(&mut self, additional: usize)
extend_one
)source§impl FromWasmAbi for Array
impl FromWasmAbi for Array
source§impl<'a> IntoWasmAbi for &'a Array
impl<'a> IntoWasmAbi for &'a Array
source§impl IntoWasmAbi for Array
impl IntoWasmAbi for Array
source§impl JsCast for Array
impl JsCast for Array
source§fn instanceof(val: &JsValue) -> bool
fn instanceof(val: &JsValue) -> bool
instanceof
check to see whether the JsValue
provided is an instance of this type. Read moresource§fn is_type_of(val: &JsValue) -> bool
fn is_type_of(val: &JsValue) -> bool
JsValue
provided
is a value of this type. Read moresource§fn unchecked_from_js(val: JsValue) -> Self
fn unchecked_from_js(val: JsValue) -> Self
source§fn unchecked_from_js_ref(val: &JsValue) -> &Self
fn unchecked_from_js_ref(val: &JsValue) -> &Self
source§fn has_type<T>(&self) -> boolwhere
T: JsCast,
fn has_type<T>(&self) -> boolwhere T: JsCast,
T
. Read moresource§fn dyn_into<T>(self) -> Result<T, Self>where
T: JsCast,
fn dyn_into<T>(self) -> Result<T, Self>where T: JsCast,
T
. Read moresource§fn dyn_ref<T>(&self) -> Option<&T>where
T: JsCast,
fn dyn_ref<T>(&self) -> Option<&T>where T: JsCast,
T
. Read moresource§fn unchecked_into<T>(self) -> Twhere
T: JsCast,
fn unchecked_into<T>(self) -> Twhere T: JsCast,
source§impl LongRefFromWasmAbi for Array
impl LongRefFromWasmAbi for Array
source§impl OptionFromWasmAbi for Array
impl OptionFromWasmAbi for Array
source§impl<'a> OptionIntoWasmAbi for &'a Array
impl<'a> OptionIntoWasmAbi for &'a Array
source§impl OptionIntoWasmAbi for Array
impl OptionIntoWasmAbi for Array
source§impl PartialEq<Array> for Array
impl PartialEq<Array> for Array
source§impl RefFromWasmAbi for Array
impl RefFromWasmAbi for Array
§type Abi = <JsValue as RefFromWasmAbi>::Abi
type Abi = <JsValue as RefFromWasmAbi>::Abi
Self
are recovered from.§type Anchor = ManuallyDrop<Array>
type Anchor = ManuallyDrop<Array>
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.impl Eq for Array
impl StructuralEq for Array
impl StructuralPartialEq for Array
Auto Trait Implementations§
impl RefUnwindSafe for Array
impl !Send for Array
impl !Sync for Array
impl Unpin for Array
impl UnwindSafe for Array
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T> ReturnWasmAbi for Twhere
T: IntoWasmAbi,
impl<T> ReturnWasmAbi for Twhere T: IntoWasmAbi,
§type Abi = <T as IntoWasmAbi>::Abi
type Abi = <T as IntoWasmAbi>::Abi
IntoWasmAbi::Abi
source§fn return_abi(self) -> <T as ReturnWasmAbi>::Abi
fn return_abi(self) -> <T as ReturnWasmAbi>::Abi
IntoWasmAbi::into_abi
, except that it may throw and never
return in the case of Err
.