pub struct Trigger { /* private fields */ }Expand description
A trigger is a data-less signal with the sole purpose of notifying other reactive code of a change.
This can be useful for when using external data not stored in signals, for example.
This is an arena-allocated Trigger, which is Copy and is disposed when its reactive
Owner cleans up. For a reference-counted trigger that lives
as long as a reference to it is alive, see ArcTrigger.
Implementations§
Trait Implementations§
impl Copy for Trigger
Source§impl DefinedAt for Trigger
impl DefinedAt for Trigger
Source§fn defined_at(&self) -> Option<&'static Location<'static>>
fn defined_at(&self) -> Option<&'static Location<'static>>
Returns the location at which the signal was defined. This is usually simply
None in
release mode.Source§impl IsDisposed for Trigger
impl IsDisposed for Trigger
Source§fn is_disposed(&self) -> bool
fn is_disposed(&self) -> bool
If
true, the signal cannot be accessed without a panic.Auto Trait Implementations§
impl Freeze for Trigger
impl RefUnwindSafe for Trigger
impl Send for Trigger
impl Sync for Trigger
impl Unpin for Trigger
impl UnsafeUnpin for Trigger
impl UnwindSafe for Trigger
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Source§impl<T> BorrowMut<T> for Twhere
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Source§fn mark_dirty(&self)
fn mark_dirty(&self)
Notifies the source’s dependencies that it has changed.
Source§fn mark_check(&self)
fn mark_check(&self)
Notifies the source’s dependencies that it may have changed.
Source§fn mark_subscribers_check(&self)
fn mark_subscribers_check(&self)
Marks that all subscribers need to be checked.
Source§fn update_if_necessary(&self) -> bool
fn update_if_necessary(&self) -> bool
Regenerates the value for this node, if needed, and returns whether
it has actually changed or not.
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Remove all subscribers from this source’s list of dependencies.
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Adds a subscriber to this source’s list of dependencies.
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