Enum MaybeSignal

pub enum MaybeSignal<T> {
    Signal(ArcSignal<T>),
    Value(Arc<T>),
}

A value which may be a signal or a fixed value.

Variants

Signal(ArcSignal<T>)

A signal.

Value(Arc<T>)

A fixed value wrapped inside an Arc.

Implementations

impl<T: 'static> MaybeSignal<T>

pub fn signal(signal: ArcSignal<T>) -> Self

Wrap a Signal inside a MaybeSignal.

pub fn value(value: T) -> Self

Wrap a value inside a MaybeSignal.

pub fn get(&self) -> Ref<'_, T>

Get a reference to the current value.

If the value is a signal, the signal’s current value is returned, otherwise a Ref::Arc of the value is returned.

pub fn into_signal(self) -> ArcSignal<T>

Converts the MaybeSignal into a ArcSignal.

If the value is a MaybeSignal::Value, a FixedSignal is created.

pub fn as_signal(&self) -> Option<ArcSignal<T>>

Converts the MaybeSignal into an ArcSignal if it is a MaybeSignal::Signal.

pub fn map<U: 'static>( self, map: impl Fn(Ref<'_, T>) -> Ref<'_, U> + 'static, ) -> MaybeSignal<U>

Applies the given mapping function to the signal.

Returns a MaybeSignal containing a MapSignal which maps the inner value of the signal.

Trait Implementations

impl<T: Clone> Clone for MaybeSignal<T>

fn clone(&self) -> MaybeSignal<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Default + 'static> Default for MaybeSignal<T>

fn default() -> Self

Returns the “default value” for a type.

impl<'a, T: 'static> From<&'a Arc<dyn Signal<T>>> for MaybeSignal<T>

fn from(value: &'a ArcSignal<T>) -> Self

Converts to this type from the input type.

impl<T: 'static> From<Arc<dyn Signal<T>>> for MaybeSignal<T>

fn from(signal: ArcSignal<T>) -> Self

Converts to this type from the input type.

impl<T: 'static> From<T> for MaybeSignal<T>

fn from(value: T) -> Self

Converts to this type from the input type.