Struct js_sys::Array [−][src]
#[repr(transparent)]pub struct Array { /* fields omitted */ }
Implementations
impl Array
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impl Array
[src]pub fn new_with_length(len: u32) -> Array
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pub fn new_with_length(len: u32) -> Array
[src]Creates a new array with the specified length (elements are initialized to undefined
).
impl Array
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impl Array
[src]impl Array
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impl Array
[src]impl Array
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impl Array
[src]impl Array
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impl Array
[src]impl Array
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impl Array
[src]impl Array
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impl Array
[src]impl Array
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impl Array
[src]pub fn last_index_of(&self, value: &JsValue, from_index: i32) -> i32
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pub fn last_index_of(&self, value: &JsValue, from_index: i32) -> i32
[src]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.
impl Array
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impl Array
[src]impl Array
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impl Array
[src]pub fn map(
&self,
predicate: &mut dyn FnMut(JsValue, u32, Array) -> JsValue
) -> Array
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pub fn map(
&self,
predicate: &mut dyn FnMut(JsValue, u32, Array) -> JsValue
) -> Array
[src]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).
impl Array
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impl Array
[src]pub fn of1(a: &JsValue) -> Array
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pub fn of1(a: &JsValue) -> Array
[src]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.
impl Array
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impl Array
[src]impl Array
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impl Array
[src]impl Array
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impl Array
[src]impl Array
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impl Array
[src]impl Array
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impl Array
[src]impl Array
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impl Array
[src]pub fn sort(&self) -> Array
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pub fn sort(&self) -> Array
[src]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.
impl Array
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impl Array
[src]pub fn to_locale_string(&self, locales: &JsValue, options: &JsValue) -> JsString
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pub fn to_locale_string(&self, locales: &JsValue, options: &JsValue) -> JsString
[src]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 “,”).
impl Array
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impl Array
[src]impl Array
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impl Array
[src]impl Array
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impl Array
[src]impl Array
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impl Array
[src]impl Array
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impl Array
[src]Methods from Deref<Target = Object>
pub fn constructor(&self) -> Function
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pub fn constructor(&self) -> Function
[src]The constructor property returns a reference to the Object
constructor
function that created the instance object.
pub fn has_own_property(&self, property: &JsValue) -> bool
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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).
pub fn is_prototype_of(&self, value: &JsValue) -> bool
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pub fn is_prototype_of(&self, value: &JsValue) -> bool
[src]The isPrototypeOf()
method checks if an object exists in another
object’s prototype chain.
pub fn property_is_enumerable(&self, property: &JsValue) -> bool
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pub fn property_is_enumerable(&self, property: &JsValue) -> bool
[src]The propertyIsEnumerable()
method returns a Boolean indicating
whether the specified property is enumerable.
pub fn to_locale_string(&self) -> JsString
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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.
Methods from Deref<Target = JsValue>
pub const NULL: JsValue
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pub const UNDEFINED: JsValue
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pub const TRUE: JsValue
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pub const FALSE: JsValue
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pub fn as_f64(&self) -> Option<f64>
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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 as_string(&self) -> Option<String>
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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>
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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_undefined(&self) -> bool
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pub fn is_undefined(&self) -> bool
[src]Tests whether this JS value is undefined
pub fn is_function(&self) -> bool
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pub fn is_function(&self) -> bool
[src]Tests whether the type of this JS value is function
.
Trait Implementations
impl<A> FromIterator<A> for Array where
A: AsRef<JsValue>,
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impl<A> FromIterator<A> for Array where
A: AsRef<JsValue>,
[src]fn from_iter<T>(iter: T) -> Array where
T: IntoIterator<Item = A>,
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fn from_iter<T>(iter: T) -> Array where
T: IntoIterator<Item = A>,
[src]Creates a value from an iterator. Read more
impl FromWasmAbi for Array
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impl FromWasmAbi for Array
[src]impl IntoWasmAbi for Array
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impl IntoWasmAbi for Array
[src]impl<'a> IntoWasmAbi for &'a Array
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impl<'a> IntoWasmAbi for &'a Array
[src]impl JsCast for Array
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impl JsCast for Array
[src]fn instanceof(val: &JsValue) -> bool
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fn instanceof(val: &JsValue) -> bool
[src]Performs a dynamic instanceof
check to see whether the JsValue
provided is an instance of this type. Read more
fn is_type_of(val: &JsValue) -> bool
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fn is_type_of(val: &JsValue) -> bool
[src]Performs a dynamic check to see whether the JsValue
provided
is a value of this type. Read more
fn unchecked_from_js(val: JsValue) -> Self
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fn unchecked_from_js(val: JsValue) -> Self
[src]Performs a zero-cost unchecked conversion from a JsValue
into an
instance of Self
Read more
fn unchecked_from_js_ref(val: &JsValue) -> &Self
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fn unchecked_from_js_ref(val: &JsValue) -> &Self
[src]Performs a zero-cost unchecked conversion from a &JsValue
into an
instance of &Self
. Read more
fn has_type<T>(&self) -> bool where
T: JsCast,
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fn has_type<T>(&self) -> bool where
T: JsCast,
[src]Test whether this JS value has a type T
. Read more
fn dyn_into<T>(self) -> Result<T, Self> where
T: JsCast,
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fn dyn_into<T>(self) -> Result<T, Self> where
T: JsCast,
[src]Performs a dynamic cast (checked at runtime) of this value into the
target type T
. Read more
fn dyn_ref<T>(&self) -> Option<&T> where
T: JsCast,
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fn dyn_ref<T>(&self) -> Option<&T> where
T: JsCast,
[src]Performs a dynamic cast (checked at runtime) of this value into the
target type T
. Read more
fn unchecked_into<T>(self) -> T where
T: JsCast,
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fn unchecked_into<T>(self) -> T where
T: JsCast,
[src]Performs a zero-cost unchecked cast into the specified type. Read more
fn unchecked_ref<T>(&self) -> &T where
T: JsCast,
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fn unchecked_ref<T>(&self) -> &T where
T: JsCast,
[src]Performs a zero-cost unchecked cast into a reference to the specified type. Read more
fn is_instance_of<T>(&self) -> bool where
T: JsCast,
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fn is_instance_of<T>(&self) -> bool where
T: JsCast,
[src]Test whether this JS value is an instance of the type T
. Read more
impl OptionFromWasmAbi for Array
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impl OptionFromWasmAbi for Array
[src]impl OptionIntoWasmAbi for Array
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impl OptionIntoWasmAbi for Array
[src]impl<'a> OptionIntoWasmAbi for &'a Array
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impl<'a> OptionIntoWasmAbi for &'a Array
[src]impl RefFromWasmAbi for Array
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impl RefFromWasmAbi for Array
[src]type Abi = <JsValue as RefFromWasmAbi>::Abi
type Abi = <JsValue as RefFromWasmAbi>::Abi
The wasm ABI type references to Self
are recovered from.
type Anchor = ManuallyDrop<Array>
type Anchor = ManuallyDrop<Array>
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
unsafe fn ref_from_abi(js: Self::Abi) -> Self::Anchor
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unsafe fn ref_from_abi(js: Self::Abi) -> Self::Anchor
[src]Recover a Self::Anchor
from Self::Abi
. Read more
impl Eq for Array
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impl StructuralEq for Array
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impl StructuralPartialEq for Array
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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
impl<T> BorrowMut<T> for T where
T: ?Sized,
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impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut T
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pub fn borrow_mut(&mut self) -> &mut T
[src]Mutably borrows from an owned value. Read more
impl<T> ReturnWasmAbi for T where
T: IntoWasmAbi,
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impl<T> ReturnWasmAbi for T where
T: IntoWasmAbi,
[src]type Abi = <T as IntoWasmAbi>::Abi
type Abi = <T as IntoWasmAbi>::Abi
Same as IntoWasmAbi::Abi
pub fn return_abi(self) -> <T as ReturnWasmAbi>::Abi
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pub fn return_abi(self) -> <T as ReturnWasmAbi>::Abi
[src]Same as IntoWasmAbi::into_abi
, except that it may throw and never
return in the case of Err
. Read more
impl<T> ToOwned for T where
T: Clone,
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impl<T> ToOwned for T where
T: Clone,
[src]type Owned = T
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn to_owned(&self) -> T
[src]Creates owned data from borrowed data, usually by cloning. Read more
pub fn clone_into(&self, target: &mut T)
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pub fn clone_into(&self, target: &mut T)
[src]🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more