Struct trait_map::TypedContext

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pub struct TypedContext<'a, E: ?Sized> { /* private fields */ }
Expand description

Stores concrete type for an entry inside a TraitMap

It can be upcast to an untyped Context using the .upcast() method.

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impl<'a, Entry> TypedContext<'a, Entry>where
Entry: 'static,

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pub fn upcast(self) -> Context<'a>

Convert back into an untyped Context.

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pub fn add_trait<Trait>(&mut self) -> &mut Selfwhere
Trait: ?Sized + Pointee<Metadata = DynMetadata<Trait>> + 'static,
Entry: Unsize<Trait>,

Register a trait to be saved into the type map

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pub fn remove_trait<Trait>(&mut self) -> &mut Selfwhere
Trait: ?Sized + Pointee<Metadata = DynMetadata<Trait>> + 'static,
Entry: Unsize<Trait>,

Unregister a trait from the type map

Trait Implementations§

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impl<'a, E: Debug + ?Sized> Debug for TypedContext<'a, E>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a, E> !RefUnwindSafe for TypedContext<'a, E>

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impl<'a, E> !Send for TypedContext<'a, E>

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impl<'a, E> !Sync for TypedContext<'a, E>

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impl<'a, E: ?Sized> Unpin for TypedContext<'a, E>

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impl<'a, E> !UnwindSafe for TypedContext<'a, E>

Blanket Implementations§

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impl<T> Any for Twhere
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 Twhere
T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

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

const: unstable · source§

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

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · 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.

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

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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 Twhere
U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.