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Js

Enum Js 

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pub enum Js {
    Undefined,
    Null,
    Bool(bool),
    Num(f64),
    Str(String),
    Arr(Vec<Js>),
    Obj(Obj),
    Typed(Typed, Arc<Vec<u8>>),
    Blob(String, Arc<Vec<u8>>),
}
Expand description

A JavaScript value as a row holds it.

Variants§

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Undefined

undefined: left out of an object, null in an array (as JSON.stringify does).

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Null

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Bool(bool)

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Num(f64)

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Str(String)

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Arr(Vec<Js>)

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Obj(Obj)

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Typed(Typed, Arc<Vec<u8>>)

A typed array, as its little-endian bytes.

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Blob(String, Arc<Vec<u8>>)

A Blob of the given media type.

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impl Js

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pub fn num(&self) -> f64

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pub fn as_str(&self) -> Option<&str>

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pub fn as_obj(&self) -> Option<&Obj>

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pub fn as_obj_mut(&mut self) -> Option<&mut Obj>

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pub fn as_arr(&self) -> Option<&[Js]>

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pub fn bytes(&self) -> Option<&Arc<Vec<u8>>>

The bytes of a typed array or blob.

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pub fn typed(kind: Typed, bytes: Vec<u8>) -> Js

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pub fn u8s(bytes: Vec<u8>) -> Js

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pub fn u32s(values: &[u32]) -> Js

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pub fn f32s(values: &[f32]) -> Js

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pub fn png(bytes: Vec<u8>) -> Js

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pub fn from_json(value: &Value) -> Js

Reads a JSON document into values, keeping its field order.

Trait Implementations§

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impl Clone for Js

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for Js

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

Formats the value using the given formatter. Read more
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impl From<&str> for Js

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fn from(v: &str) -> Js

Converts to this type from the input type.
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impl From<Obj> for Js

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fn from(v: Obj) -> Js

Converts to this type from the input type.
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impl From<String> for Js

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fn from(v: String) -> Js

Converts to this type from the input type.
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impl From<Vec<Js>> for Js

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fn from(v: Vec<Js>) -> Js

Converts to this type from the input type.
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impl From<bool> for Js

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fn from(v: bool) -> Js

Converts to this type from the input type.
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impl From<f64> for Js

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fn from(v: f64) -> Js

Converts to this type from the input type.
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impl From<i32> for Js

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fn from(v: i32) -> Js

Converts to this type from the input type.
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impl From<u32> for Js

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fn from(v: u32) -> Js

Converts to this type from the input type.
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impl From<u64> for Js

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fn from(v: u64) -> Js

Converts to this type from the input type.
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impl From<usize> for Js

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fn from(v: usize) -> Js

Converts to this type from the input type.
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impl PartialEq for Js

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fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for Js

Auto Trait Implementations§

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impl Freeze for Js

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impl RefUnwindSafe for Js

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impl Send for Js

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impl Sync for Js

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impl Unpin for Js

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impl UnsafeUnpin for Js

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impl UnwindSafe for Js

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.