Struct Calculated 

pub struct Calculated<T>(/* private fields */);

Implementations

impl<T> Calculated<T>

where T: 'static,

pub fn new(f: impl Fn() -> T + 'static) -> Self

impl<T> Calculated<T>

where T: Default + 'static,

pub fn new_result(f: impl Fn() -> Result<T> + 'static) -> Self

If an error is returned the signals value will be set to the default value.

Trait Implementations

impl<T> Clone for Calculated<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Calculated<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: PartialEq> PartialEq for Calculated<T>

fn eq(&self, other: &Calculated<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

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

impl<T> SignalBase<T> for Calculated<T>

fn base(&self) -> Signal<T>

Returns the underlying signal of the concrete implementation.

impl<T> SignalGetter<T> for Calculated<T>

where T: Clone + 'static,

fn peek(&self) -> T

Returns the current value of the signal without tracking updates.

fn value(&self) -> T

Return the value of the signal and appends it to the current scope’s dependencies. If the values changes, the scope gets reexecuted to update to the new value.

impl<T> Copy for Calculated<T>

impl<T: Eq> Eq for Calculated<T>

impl<T> StructuralPartialEq for Calculated<T>