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Scope

Struct Scope 

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pub struct Scope { /* private fields */ }
Expand description

Ownership scope for signals/effects (§4.3). Copy handle; not Send.

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impl Scope

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pub fn current() -> Scope

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pub fn root() -> Scope

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pub fn child() -> Scope

Create a child of the current scope.

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pub fn create_child(self) -> Scope

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pub fn detached() -> Scope

A scope owned by nobody — dispose it manually.

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pub fn enter<R>(self, f: impl FnOnce() -> R) -> R

Run f with self as the current scope.

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pub fn on_cleanup(self, f: impl FnOnce() + 'static)

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pub fn is_alive(self) -> bool

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pub fn dispose(self)

Dispose this scope: children first, then own nodes (unsubscribed + dropped) and cleanups.

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pub fn provide<T: 'static>(self, value: T)

Provide a context value visible to this scope and its descendants.

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pub fn use_context<T: Clone + 'static>(self) -> Option<T>

Look up a context value here or in any ancestor (requires T: Clone).

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impl Clone for Scope

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fn clone(&self) -> Scope

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl PartialEq for Scope

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for Scope

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impl Eq for Scope

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impl StructuralPartialEq for Scope

Auto Trait Implementations§

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impl Freeze for Scope

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impl RefUnwindSafe for Scope

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impl !Send for Scope

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impl !Sync for Scope

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impl Unpin for Scope

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impl UnsafeUnpin for Scope

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impl UnwindSafe for Scope

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> 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 = Infallible

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

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.
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