Struct mini_rx::Var

source · [−]

pub struct Var<'c, T>(_);

Expand description

Index into the DAG which will give you an Rx variable. However, to get or set the value you need a shared reference to the DAG. This value is not computed from other values, instead you set it directly.

Implementations

impl<'c, T> Var<'c, T>

pub fn get<'a>(self, c: impl RxContext<'a, 'c>) -> &'a T where
'c: 'a,

pub fn set<'a>(self, c: impl MutRxContext<'a, 'c>, value: T) where
'c: 'a,

pub fn modify<'a, F: FnOnce(&T) -> T>(
    self,
    c: impl MutRxContext<'a, 'c>,
    modify: F
) where
    'c: 'a,

Apply a transformation to the latest value. This must be used instead of chaining set and get, since setting a value doesn’t make it returned by get until the graph is recomputed.

pub fn derive<U, GetFn: Fn(&T) -> &U, SetFn: Fn(&T, U) -> T>(
    self,
    get: GetFn,
    set: SetFn
) -> DVar<'c, T, U, GetFn, SetFn>

pub fn derive_using_clone<U, GetFn: Fn(&T) -> &U, SetFn: Fn(&mut T, U)>(
    self,
    get: GetFn,
    set: SetFn
) -> DVar<'c, T, U, GetFn, CloneSetFn<T, U, SetFn>> where
    T: Clone,

Trait Implementations

impl<'c, T> Clone for Var<'c, T>

fn clone(&self) -> Self

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

impl<'c, T: Debug> Debug for Var<'c, T>

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

Formats the value using the given formatter. Read more

impl<'c, T> Copy for Var<'c, T>

Auto Trait Implementations

impl<'c, T> RefUnwindSafe for Var<'c, T> where
T: RefUnwindSafe,

impl<'c, T> Send for Var<'c, T> where
T: Send,

impl<'c, T> Sync for Var<'c, T> where
T: Sync,

impl<'c, T> Unpin for Var<'c, T> where
T: Unpin,

impl<'c, T> UnwindSafe for Var<'c, T> where
T: UnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.