pub struct Registry { /* private fields */ }
Expand description

A registry is a container for type-erased structs. It can store any struct, or any dyn Trait object, which can then be queried again by calling get::<T>() for a regular struct or get_dyn::<dyn Trait>() for trait objects.

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impl Registry

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pub fn new() -> Self

Create a new registry

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pub fn put<T: 'static>(&mut self, item: T)

Put a static type T into the registry. This can then be retrieved back by calling Self::get::<T>()

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pub fn put_dyn<T: ?Sized + 'static>(&mut self, item: impl Unsize<T>)

Put a trait object into the registry. If called with dyn MyTrait, this takes in any Foo: MyTrait, which is then moved into the registry and can be queried back with Self::get_dyn::<dyn MyTrait>()

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pub fn get<T: 'static>(&self) -> Option<&T>

Get the registered object for T, or None if it didn’t exist.

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pub fn get_dyn<T: ?Sized + 'static>(&self) -> Option<&T>

Get the registered implementation for dyn MyTrait, or None if it didn’t exist.

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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,

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

Performs the conversion.