[−][src]Struct brioche_ducc::Object
Reference to a JavaScript object (guaranteed to not be an array or function).
Methods
impl<'ducc> Object<'ducc>
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pub fn get<K: ToValue<'ducc>, V: FromValue<'ducc>>(&self, key: K) -> Result<V>
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Get an object property value using the given key. Returns Value::Undefined
if no property
with the key exists.
Errors
This function returns an error if:
ToValue::to_value
fails for the key- The
ToPropertyKey
implementation for the key fails
pub fn set<K: ToValue<'ducc>, V: ToValue<'ducc>>(
&self,
key: K,
value: V
) -> Result<()>
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&self,
key: K,
value: V
) -> Result<()>
Sets an object property using the given key and value.
Errors
This function returns an error if:
ToValue::to_value
fails for either the key or the value- The
ToPropertyKey
implementation for the key fails
pub fn remove<K: ToValue<'ducc>>(&self, key: K) -> Result<()>
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Removes the given key from the object. This function does nothing if the property does not exist.
Errors
This function returns an error if:
ToValue::to_value
fails for the key- The
ToPropertyKey
implementation for the key fails
pub fn contains_key<K: ToValue<'ducc>>(&self, key: K) -> Result<bool>
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Returns true
if the given key is a property of the object, false
otherwise.
Errors
This function returns an error if:
ToValue::to_value
fails for the key- The
ToPropertyKey
implementation for the key fails
pub fn len(&self) -> Result<usize>
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Returns the number of elements in the object using the calculation
Math.floor(ToNumber(obj.length))
. This function can return an error if the ToNumber
implementation fails or if the length
getter fails. Returns Ok(0)
if the calculation
returns a number (a floating point in JavaScript land) outside of the range of usize
.
pub fn call_prop<K, A, R>(&self, key: K, args: A) -> Result<R> where
K: ToValue<'ducc>,
A: ToValues<'ducc>,
R: FromValue<'ducc>,
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K: ToValue<'ducc>,
A: ToValues<'ducc>,
R: FromValue<'ducc>,
Calls the function at the key with the given arguments, with this
set to the object.
Returns an error if the value at the key is not a function.
ⓘImportant traits for Properties<'ducc, K, V>pub fn properties<K: FromValue<'ducc>, V: FromValue<'ducc>>(
self
) -> Properties<'ducc, K, V>
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self
) -> Properties<'ducc, K, V>
Returns an iterator over the object's keys and values, acting like a for-in
loop: own and
inherited enumerable properties are included, and enumeration order follows the ES2015
OwnPropertyKeys
enumeration order, applied for each inheritance level.
Trait Implementations
impl<'ducc> Clone for Object<'ducc>
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impl<'ducc> Debug for Object<'ducc>
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impl<'ducc> FromValue<'ducc> for Object<'ducc>
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impl<'ducc> ToValue<'ducc> for Object<'ducc>
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Auto Trait Implementations
impl<'ducc> RefUnwindSafe for Object<'ducc>
impl<'ducc> !Send for Object<'ducc>
impl<'ducc> !Sync for Object<'ducc>
impl<'ducc> Unpin for Object<'ducc>
impl<'ducc> UnwindSafe for Object<'ducc>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,