pub enum HomogeneousAggregate {
    Homogeneous(Reg),
    NoData,
}
Expand description

Return value from the homogeneous_aggregate test function.

Variants§

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Homogeneous(Reg)

Yes, all the “leaf fields” of this struct are passed in the same way (specified in the Reg value).

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NoData

There are no leaf fields at all.

Implementations§

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impl HomogeneousAggregate

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pub fn unit(self) -> Option<Reg>

If this is a homogeneous aggregate, returns the homogeneous unit, else None.

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fn merge( self, other: HomogeneousAggregate ) -> Result<HomogeneousAggregate, Heterogeneous>

Try to combine two HomogeneousAggregates, e.g. from two fields in the same struct. Only succeeds if only one of them has any data, or both units are identical.

Trait Implementations§

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impl Clone for HomogeneousAggregate

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fn clone(&self) -> HomogeneousAggregate

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for HomogeneousAggregate

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

Formats the value using the given formatter. Read more
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impl Copy for HomogeneousAggregate

Auto Trait Implementations§

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,

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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> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 16 bytes

Size for each variant:

  • Homogeneous: 16 bytes
  • NoData: 0 bytes