State

Struct State 

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pub struct State(/* private fields */);

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impl State

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pub fn insert<A: Any + Send>(&mut self, item: A) -> Option<A>

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pub fn remove<A: Any + Send>(&mut self) -> Option<A>

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pub fn get<A: Any + Send>(&self) -> Option<&A>

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pub fn get_mut<A: Any + Send>(&mut self) -> Option<&mut A>

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pub fn get_or_default<A: Default + Any + Send>(&mut self) -> &A

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pub fn get_mut_or_default<A: Default + Any + Send>(&mut self) -> &mut A

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impl Default for State

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fn default() -> State

Returns the “default value” for a type. Read more

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impl Freeze for State

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impl !RefUnwindSafe for State

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impl Send for State

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impl !Sync for State

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impl Unpin for State

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impl !UnwindSafe for State

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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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

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

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.