Enum MaybeSignal 

pub enum MaybeSignal<T: 'static> {
    Signal(BoxedSignal<T>),
    Value(Rc<T>),
}

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

Variants

Signal(BoxedSignal<T>)

A signal.

Value(Rc<T>)

A fixed value wrapped inside a Rc.

Implementations

impl<T: 'static> MaybeSignal<T>

pub const fn signal(signal: BoxedSignal<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::Rc] of the value is returned.

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

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

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

Converts the MaybeSignal into a BoxedSignal.

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

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

fn default() -> Self

Returns the “default value” for a type.

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

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

Converts to this type from the input type.

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

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

Converts to this type from the input type.

impl<T: 'static, U: 'static> From<MapSignal<T, U>> for MaybeSignal<U>

fn from(value: MapSignal<T, U>) -> 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.