Struct observe::Computed

pub struct Computed<T>where
    T: Hash + 'static,{ /* private fields */ }

Implementations

impl<T> Computed<T>where T: Hash + 'static,

pub fn new(func: Box<dyn Fn(&Evaluation) -> T>) -> Self

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

pub fn get<'a>(&'a self, cx: &'a impl AsRef<Evaluation>) -> Ref<'a, T>

Trait Implementations

impl<T> Clone for Computed<T>where T: Hash,

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Hash + 'static> From<Computed<T>> for Rc<dyn Any>

fn from(var: Computed<T>) -> Self

Converts to this type from the input type.

impl<T> From<Computed<T>> for Value<T>where T: Hash + 'static,

fn from(computed: Computed<T>) -> Self

Converts to this type from the input type.

impl<T: Hash + 'static> TryFrom<Rc<dyn Any + 'static>> for Computed<T>

type Error = Rc<dyn Any + 'static>

The type returned in the event of a conversion error.

fn try_from(value: Rc<dyn Any>) -> Result<Self, Self::Error>

Performs the conversion.