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

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

Temporary object used to find state objects for given ids.

Implementations

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

pub fn get<'i, T, Q: ?Sized>(&mut self, id: &Q) -> &'i mut T where
    T: Default + Any,
    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,
    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,
    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> Drop for ManagedStateTracker<'a, Id>[src]

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]

impl<T> Any for T where
    T: Any, 

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

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

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

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

impl<T> SetParameter for T

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.

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.