Struct js_sys::ArrayBuffer [−][src]
#[repr(transparent)]pub struct ArrayBuffer { /* fields omitted */ }
Implementations
impl ArrayBuffer
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impl ArrayBuffer
[src]pub fn new(length: u32) -> ArrayBuffer
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pub fn new(length: u32) -> ArrayBuffer
[src]The ArrayBuffer
object is used to represent a generic,
fixed-length raw binary data buffer. You cannot directly
manipulate the contents of an ArrayBuffer
; instead, you
create one of the typed array objects or a DataView
object
which represents the buffer in a specific format, and use that
to read and write the contents of the buffer.
impl ArrayBuffer
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impl ArrayBuffer
[src]pub fn byte_length(&self) -> u32
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pub fn byte_length(&self) -> u32
[src]The byteLength property of an object which is an instance of type ArrayBuffer it’s an accessor property whose set accessor function is undefined, meaning that you can only read this property. The value is established when the array is constructed and cannot be changed. This property returns 0 if this ArrayBuffer has been detached.
impl ArrayBuffer
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impl ArrayBuffer
[src]impl ArrayBuffer
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impl ArrayBuffer
[src]pub fn slice(&self, begin: u32) -> ArrayBuffer
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pub fn slice(&self, begin: u32) -> ArrayBuffer
[src]The slice()
method returns a new ArrayBuffer
whose contents
are a copy of this ArrayBuffer
’s bytes from begin, inclusive,
up to end, exclusive.
impl ArrayBuffer
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impl ArrayBuffer
[src]pub fn slice_with_end(&self, begin: u32, end: u32) -> ArrayBuffer
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pub fn slice_with_end(&self, begin: u32, end: u32) -> ArrayBuffer
[src]Like slice()
but with the end
argument.
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 AsRef<ArrayBuffer> for ArrayBuffer
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impl AsRef<ArrayBuffer> for ArrayBuffer
[src]fn as_ref(&self) -> &ArrayBuffer
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fn as_ref(&self) -> &ArrayBuffer
[src]Performs the conversion.
impl Clone for ArrayBuffer
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impl Clone for ArrayBuffer
[src]fn clone(&self) -> ArrayBuffer
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fn clone(&self) -> ArrayBuffer
[src]Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
fn clone_from(&mut self, source: &Self)
1.0.0[src]Performs copy-assignment from source
. Read more
impl Debug for ArrayBuffer
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impl Debug for ArrayBuffer
[src]impl Deref for ArrayBuffer
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impl Deref for ArrayBuffer
[src]impl From<ArrayBuffer> for JsValue
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impl From<ArrayBuffer> for JsValue
[src]fn from(obj: ArrayBuffer) -> JsValue
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fn from(obj: ArrayBuffer) -> JsValue
[src]Performs the conversion.
impl From<ArrayBuffer> for Object
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impl From<ArrayBuffer> for Object
[src]fn from(obj: ArrayBuffer) -> Object
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fn from(obj: ArrayBuffer) -> Object
[src]Performs the conversion.
impl From<JsValue> for ArrayBuffer
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impl From<JsValue> for ArrayBuffer
[src]fn from(obj: JsValue) -> ArrayBuffer
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fn from(obj: JsValue) -> ArrayBuffer
[src]Performs the conversion.
impl FromWasmAbi for ArrayBuffer
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impl FromWasmAbi for ArrayBuffer
[src]impl IntoWasmAbi for ArrayBuffer
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impl IntoWasmAbi for ArrayBuffer
[src]impl<'a> IntoWasmAbi for &'a ArrayBuffer
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impl<'a> IntoWasmAbi for &'a ArrayBuffer
[src]impl JsCast for ArrayBuffer
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impl JsCast for ArrayBuffer
[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 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
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
impl OptionFromWasmAbi for ArrayBuffer
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impl OptionFromWasmAbi for ArrayBuffer
[src]impl OptionIntoWasmAbi for ArrayBuffer
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impl OptionIntoWasmAbi for ArrayBuffer
[src]impl<'a> OptionIntoWasmAbi for &'a ArrayBuffer
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impl<'a> OptionIntoWasmAbi for &'a ArrayBuffer
[src]impl PartialEq<ArrayBuffer> for ArrayBuffer
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impl PartialEq<ArrayBuffer> for ArrayBuffer
[src]fn eq(&self, other: &ArrayBuffer) -> bool
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fn eq(&self, other: &ArrayBuffer) -> bool
[src]This method tests for self
and other
values to be equal, and is used
by ==
. Read more
fn ne(&self, other: &ArrayBuffer) -> bool
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fn ne(&self, other: &ArrayBuffer) -> bool
[src]This method tests for !=
.
impl RefFromWasmAbi for ArrayBuffer
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impl RefFromWasmAbi for ArrayBuffer
[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<ArrayBuffer>
type Anchor = ManuallyDrop<ArrayBuffer>
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 WasmDescribe for ArrayBuffer
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impl WasmDescribe for ArrayBuffer
[src]impl Eq for ArrayBuffer
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impl StructuralEq for ArrayBuffer
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impl StructuralPartialEq for ArrayBuffer
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Auto Trait Implementations
impl RefUnwindSafe for ArrayBuffer
impl !Send for ArrayBuffer
impl !Sync for ArrayBuffer
impl Unpin for ArrayBuffer
impl UnwindSafe for ArrayBuffer
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