Enum MaybeDyn

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pub enum MaybeDyn<T>where
    T: Into<Self> + 'static,{
    Static(T),
    Signal(ReadSignal<T>),
    Derived(Rc<dyn Fn() -> Self>),
}

Expand description

Represents a value that can be either static or dynamic.

This is useful for cases where you want to accept a value that can be either static or dynamic, such as in component props.

A MaybeDyn value can be created from a static value or a closure that returns the value by using the From trait.

§Creating a `MaybeDyn`

You can create a MaybeDyn from a static value by using the MaybeDyn::Static variant. However, most of the times, you probably want to use the implementation of the From trait for MaybeDyn<T>.

This trait is already implemented globally for signals and closures that return T. However, we cannot provide a blanket implementation for all types T to convert into MaybeDyn<T> because of specialization. Instead, we can only implement it for specific types.

Variants§

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Static(T)

A static value.

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Signal(ReadSignal<T>)

A dynamic value backed by a signal.

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Derived(Rc<dyn Fn() -> Self>)

A derived dynamic value.

Enum MaybeDynCopy item path

§Creating a MaybeDyn

Variants§

Static(T)

Signal(ReadSignal<T>)

Derived(Rc<dyn Fn() -> Self>)

Implementations§

impl<T: Into<Self> + 'static> MaybeDyn<T>

pub fn evaluate(self) -> Twhere T: Clone,

pub fn get(&self) -> Twhere T: Copy,

pub fn get_clone(&self) -> Twhere T: Clone,

pub fn track(&self)

pub fn as_static(&self) -> Option<&T>

Trait Implementations§

impl<T> Clone for MaybeDyn<T>where T: Into<Self> + 'static + Clone,

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

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

impl From<&'static str> for MaybeDyn<Cow<'static, str>>

fn from(val: &'static str) -> Self

impl From<&'static str> for MaybeDyn<JsValue>

fn from(val: &'static str) -> Self

impl From<&'static str> for MaybeDyn<Option<Cow<'static, str>>>

fn from(val: &'static str) -> Self

impl From<Cow<'static, str>> for MaybeDyn<Cow<'static, str>>

fn from(val: Cow<'static, str>) -> Self

impl From<Cow<'static, str>> for MaybeDyn<Option<Cow<'static, str>>>

fn from(val: Cow<'static, str>) -> Self

impl<F, U, T: Into<Self>> From<F> for MaybeDyn<T>where F: Fn() -> U + 'static, U: Into<MaybeDyn<T>>,

fn from(f: F) -> Self

impl From<JsValue> for MaybeDyn<JsValue>

fn from(val: JsValue) -> Self

impl From<Option<&'static str>> for MaybeDyn<Option<Cow<'static, str>>>

fn from(val: Option<&'static str>) -> Self

impl From<Option<String>> for MaybeDyn<Option<Cow<'static, str>>>

fn from(val: Option<String>) -> Self

impl<T> From<Option<T>> for MaybeDyn<Option<T>>

fn from(val: Option<T>) -> Self

impl<T: Into<Self>, U: Into<MaybeDyn<T>> + Clone> From<ReadSignal<U>> for MaybeDyn<T>

fn from(val: ReadSignal<U>) -> Self

impl<T: Into<Self>, U: Into<MaybeDyn<T>> + Clone> From<Signal<U>> for MaybeDyn<T>

fn from(val: Signal<U>) -> Self

impl From<String> for MaybeDyn<Cow<'static, str>>

fn from(val: String) -> Self

impl From<String> for MaybeDyn<JsValue>

fn from(val: String) -> Self

impl From<String> for MaybeDyn<Option<Cow<'static, str>>>

fn from(val: String) -> Self

impl<T> From<Vec<T>> for MaybeDyn<Vec<T>>

fn from(val: Vec<T>) -> Self

impl From<bool> for MaybeDyn<JsValue>

fn from(val: bool) -> Self

impl From<bool> for MaybeDyn<bool>

fn from(val: bool) -> Self

impl From<f32> for MaybeDyn<JsValue>

fn from(val: f32) -> Self

impl From<f32> for MaybeDyn<f32>

fn from(val: f32) -> Self

impl From<f64> for MaybeDyn<JsValue>

fn from(val: f64) -> Self

impl From<f64> for MaybeDyn<f64>

fn from(val: f64) -> Self

impl From<i128> for MaybeDyn<JsValue>

fn from(val: i128) -> Self

impl From<i128> for MaybeDyn<i128>

fn from(val: i128) -> Self

impl From<i16> for MaybeDyn<JsValue>

fn from(val: i16) -> Self

impl From<i16> for MaybeDyn<i16>

fn from(val: i16) -> Self

impl From<i32> for MaybeDyn<JsValue>

fn from(val: i32) -> Self

impl From<i32> for MaybeDyn<i32>

fn from(val: i32) -> Self

impl From<i64> for MaybeDyn<JsValue>

fn from(val: i64) -> Self

impl From<i64> for MaybeDyn<i64>

fn from(val: i64) -> Self

impl From<i8> for MaybeDyn<JsValue>

fn from(val: i8) -> Self

impl From<i8> for MaybeDyn<i8>

Enum MaybeDyn

§Creating a `MaybeDyn`

pub fn evaluate(self) -> T
where T: Clone,

pub fn get(&self) -> T
where T: Copy,

pub fn get_clone(&self) -> T
where T: Clone,

impl<T> Clone for MaybeDyn<T>
where T: Into<Self> + 'static + Clone,

impl<F, U, T: Into<Self>> From<F> for MaybeDyn<T>
where F: Fn() -> U + 'static, U: Into<MaybeDyn<T>>,

impl<T> Freeze for MaybeDyn<T>
where T: Freeze,

impl<T> Unpin for MaybeDyn<T>
where T: Unpin,

impl<T> Any for T
where T: 'static + ?Sized,

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

impl<T> CloneToUninit for T
where T: Clone,

impl<T, U> Into<U> for T
where U: From<T>,

impl<T> ToOwned for T
where T: Clone,

impl<T, U> TryFrom<U> for T
where U: Into<T>,