Struct freya::prelude::Write

pub struct Write<'a, T, S = UnsyncStorage>
where T: 'static + ?Sized, S: AnyStorage,
{ /* private fields */ }
Expand description

A mutable reference to a signal’s value.

T is the current type of the write S is the storage type of the signal

Implementations§

§

impl<'a, T, S> Write<'a, T, S>
where T: 'static + ?Sized, S: AnyStorage,

pub fn map<O>( myself: Write<'a, T, S>, f: impl FnOnce(&mut T) -> &mut O ) -> Write<'a, O, S>
where O: ?Sized,

Map the mutable reference to the signal’s value to a new type.

pub fn filter_map<O>( myself: Write<'a, T, S>, f: impl FnOnce(&mut T) -> Option<&mut O> ) -> Option<Write<'a, O, S>>
where O: ?Sized,

Try to map the mutable reference to the signal’s value to a new type

pub fn downcast_lifetime<'b>(mut_: Write<'a, T, S>) -> Write<'b, T, S>
where 'a: 'b,

Downcast the lifetime of the mutable reference to the signal’s value.

This function enforces the variance of the lifetime parameter 'a in Mut. Rust will typically infer this cast with a concrete type, but it cannot with a generic type.

Trait Implementations§

§

impl<T, S> Deref for Write<'_, T, S>
where T: 'static + ?Sized, S: AnyStorage,

§

type Target = T

The resulting type after dereferencing.
§

fn deref(&self) -> &<Write<'_, T, S> as Deref>::Target

Dereferences the value.
§

impl<T, S> DerefMut for Write<'_, T, S>
where S: AnyStorage, T: ?Sized,

§

fn deref_mut(&mut self) -> &mut <Write<'_, T, S> as Deref>::Target

Mutably dereferences the value.

Auto Trait Implementations§

§

impl<'a, T, S> Freeze for Write<'a, T, S>
where <S as AnyStorage>::Mut<'a, T>: Freeze, T: ?Sized,

§

impl<'a, T, S = UnsyncStorage> !RefUnwindSafe for Write<'a, T, S>

§

impl<'a, T, S = UnsyncStorage> !Send for Write<'a, T, S>

§

impl<'a, T, S = UnsyncStorage> !Sync for Write<'a, T, S>

§

impl<'a, T, S> Unpin for Write<'a, T, S>
where <S as AnyStorage>::Mut<'a, T>: Unpin, T: ?Sized,

§

impl<'a, T, S = UnsyncStorage> !UnwindSafe for Write<'a, T, S>

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

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

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

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

source§

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

Mutably borrows from an owned value. Read more
§

impl<T> Downcast for T
where T: Any,

§

fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
§

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
§

fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
§

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

§

impl<T> Instrument for T

§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
source§

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

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.

source§

impl<T> IntoEither for T

source§

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
§

impl<T> Pointable for T

§

const ALIGN: usize = _

The alignment of pointer.
§

type Init = T

The type for initializers.
§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
source§

impl<T> Same for T

§

type Output = T

Should always be Self
§

impl<T, O> SuperFrom<T> for O
where O: From<T>,

§

fn super_from(input: T) -> O

Convert from a type to another type.
§

impl<T, O, M> SuperInto<O, M> for T
where O: SuperFrom<T, M>,

§

fn super_into(self) -> O

Convert from a type to another type.
§

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

§

fn to<T>(self) -> T
where Self: Into<T>,

Converts to T by calling Into<T>::into.
§

fn try_to<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Tries to convert to T by calling TryInto<T>::try_into.
source§

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

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

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

Performs the conversion.
source§

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.
source§

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

Performs the conversion.
§

impl<Cfg> TryIntoConfig for Cfg

§

fn into_config(self) -> Option<Cfg>

§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

§

fn vzip(self) -> V

§

impl<T> WithSubscriber for T

§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more