Struct pixel_widgets::tracker::ManagedStateTracker[−][src]

pub struct ManagedStateTracker<'a, Id: Eq + Clone + Send + Sync> { /* fields omitted */ }
Expand description

Temporary object used to find state objects for given ids.

Implementations

impl<'a, Id: Eq + Clone + Send + Sync> ManagedStateTracker<'a, Id>[src]

pub fn get<'i, T, Q: ?Sized>(&mut self, id: &Q) -> &'i mut T where
    T: Default + Any + Send + Sync,
    Q: Eq + ToOwned<Owned = Id>,
    Id: Borrow<Q>, [src]

Get a state object for the given id. If such an object doesn’t exist yet, it is constructed using it’s Default implementation.

pub fn get_or_default<'i, T, Q: ?Sized>(
    &mut self,
    id: &Q,
    default: T
) -> &'i mut T where
    T: Any + Send + Sync,
    Q: Eq + ToOwned<Owned = Id>,
    Id: Borrow<Q>, [src]

Get a state object for the given id. If such an object doesn’t exist yet, the supplied default value is used.

pub fn get_or_default_with<'i, T, Q: ?Sized, F>(
    &mut self,
    id: &Q,
    default: F
) -> &'i mut T where
    T: Any + Send + Sync,
    Q: Eq + ToOwned<Owned = Id>,
    F: FnOnce() -> T,
    Id: Borrow<Q>, [src]

Get a state object for the given id. If such an object doesn’t exist yet, it is constructed using the closure.

Trait Implementations

impl<'a, Id: Eq + Clone + Send + Sync> Drop for ManagedStateTracker<'a, Id>[src]

fn drop(&mut self)[src]

Executes the destructor for this type. Read more

Auto Trait Implementations

impl<'a, Id> !RefUnwindSafe for ManagedStateTracker<'a, Id>

impl<'a, Id> Send for ManagedStateTracker<'a, Id>

impl<'a, Id> Sync for ManagedStateTracker<'a, Id>

impl<'a, Id> Unpin for ManagedStateTracker<'a, Id>

impl<'a, Id> !UnwindSafe for ManagedStateTracker<'a, Id>

Blanket Implementations

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

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T> Downcast<T> for T

pub fn downcast(&self) -> &T

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<T> Pointable for T

pub const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

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

Initializes a with the given initializer. Read more

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

Dereferences the given pointer. Read more

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

Mutably dereferences the given pointer. Read more

pub unsafe fn drop(ptr: usize)

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

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

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

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T> Upcast<T> for T

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

impl<T> Any for T where
    T: Any,