Identity

Struct Identity 

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pub struct Identity;
Expand description

The identity functor, which implements Functor for any signature.

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impl<K: ArrayKind, O, A> Functor<K, O, A, O, A> for Identity
where K::Type<K::I>: NaturalArray<K>, K::Type<O>: Array<K, O> + PartialEq, K::Type<A>: Array<K, A>,

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fn map_object( &self, a: &SemifiniteFunction<K, O>, ) -> IndexedCoproduct<K, SemifiniteFunction<K, O>>

Action on objects
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fn map_arrow(&self, f: &OpenHypergraph<K, O, A>) -> OpenHypergraph<K, O, A>

Action on arrows. If you have implemented map_operations, you can implement this simply as define_map_arrow(self, f).
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fn map_operations(&self, ops: Operations<K, O, A>) -> OpenHypergraph<K, O, A>

Action on tensoring of operations, i.e., compute F(f₀) ● F(f₁) ● .. ● F(fn) for generators f_i.

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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> 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.