zng::state_map

Struct StateMapMut

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pub struct StateMapMut<'a, U>(/* private fields */);
Expand description

Mutable state map.

The U parameter is tag type that represents the map’s context.

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impl<'a, U> StateMapMut<'a, U>

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pub fn contains<T>(&self, id: impl Into<StateId<T>>) -> bool
where T: StateValue,

Gets if the ID is set in this map.

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pub fn get<T>(&self, id: impl Into<StateId<T>>) -> Option<&T>
where T: StateValue,

Reference the ID’s value set in this map.

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pub fn into_get<T>(self, id: impl Into<StateId<T>>) -> Option<&'a T>
where T: StateValue,

Consume the mutable reference to the map and returns a reference to the value in the parent lifetime 'a.

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pub fn copy<T>(&self, id: impl Into<StateId<T>>) -> Option<T>
where T: StateValue + Copy,

Copy the ID’s value set in this map.

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pub fn get_clone<T>(&self, id: impl Into<StateId<T>>) -> Option<T>
where T: StateValue + Clone,

Clone the ID’s value set in this map.

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pub fn req<T>(&self, id: impl Into<StateId<T>>) -> &T
where T: StateValue,

Reference the ID’s value set in this map or panics if the ID is not set.

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pub fn into_req<T>(self, id: impl Into<StateId<T>>) -> &'a T
where T: StateValue,

Consume the mutable reference to the map and returns a reference to the value in the parent lifetime 'a.

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pub fn flagged(&self, id: impl Into<StateId<()>>) -> bool

Gets if a state ID without value is set.

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pub fn is_empty(&self) -> bool

If no state is set.

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pub fn set<T>( &mut self, id: impl Into<StateId<T>>, value: impl Into<T>, ) -> Option<T>
where T: StateValue,

Set the ID’s value.

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pub fn get_mut<T>(&mut self, id: impl Into<StateId<T>>) -> Option<&mut T>
where T: StateValue,

Mutable borrow the ID’s value set in this map.

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pub fn into_get_mut<T>(self, id: impl Into<StateId<T>>) -> Option<&'a mut T>
where T: StateValue,

Consume the mutable reference to the map and mutable borrow the ID’s value in the parent lifetime 'a.

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pub fn req_mut<T>(&mut self, id: impl Into<StateId<T>>) -> &mut T
where T: StateValue,

Mutable borrow the key value set in this map or panics if the ID is not set.

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pub fn into_req_mut<T>(self, id: impl Into<StateId<T>>) -> &'a mut T
where T: StateValue,

Consume the mutable reference to the map and mutable borrow the ID value in the parent lifetime 'a.

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pub fn entry<T>(&mut self, id: impl Into<StateId<T>>) -> StateMapEntry<'_, T>
where T: StateValue,

Gets the given ID’s corresponding entry in the map for in-place manipulation.

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pub fn into_entry<T>(self, id: impl Into<StateId<T>>) -> StateMapEntry<'a, T>
where T: StateValue,

Consume the mutable reference to the map and returns a given ID’s corresponding entry in the map with the parent lifetime 'a.

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pub fn flag(&mut self, id: impl Into<StateId<()>>) -> bool

Sets a state ID without value.

Returns if the state ID was already flagged.

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pub fn reborrow(&mut self) -> StateMapMut<'_, U>

Reborrow the mutable reference.

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pub fn as_ref(&self) -> StateMapRef<'_, U>

Reborrow the reference as read-only.

Trait Implementations§

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impl<U> Debug for StateMapMut<'_, U>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a, U> Freeze for StateMapMut<'a, U>

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impl<'a, U> !RefUnwindSafe for StateMapMut<'a, U>

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impl<'a, U> Send for StateMapMut<'a, U>
where U: Send,

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impl<'a, U> Sync for StateMapMut<'a, U>
where U: Sync,

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impl<'a, U> Unpin for StateMapMut<'a, U>
where U: Unpin,

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impl<'a, U> !UnwindSafe for StateMapMut<'a, U>

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> Downcast for T
where T: Any,

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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.
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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.
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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.
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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.
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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FsChangeNote for T
where T: Debug + Any + Send + Sync,

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

Access any.
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impl<T> Instrument for T

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

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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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
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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
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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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type Output = T

Should always be Self
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where U: Into<T>,

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

Performs the conversion.
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where U: TryFrom<T>,

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

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

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

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where S: Into<Dispatch>,

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where T: Any + Send + Sync,