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Precondition

eqiora::graph

Enum Precondition 

#[non_exhaustive]
pub enum Precondition {
    ValueEquals {
        target: RawId,
        expected: DynQuantity,
    },
    RevisionIs(Revision),
}
Description

A precondition checked atomically at commit time.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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ValueEquals

The target node still carries the expected value.

Fields

§target: RawId

Node whose value is asserted.

§expected: DynQuantity

Expected current value.

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RevisionIs(Revision)

The federation is still at the given revision.

Trait Implementations§

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impl Clone for Precondition

Signature links:§ClonePrecondition
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fn clone(&self) -> Precondition

Signature links:§clonePrecondition
Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Signature links:unstableSource§clone_from
Performs copy-assignment from source. Read more
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impl Debug for Precondition

Signature links:§DebugPrecondition
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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Signature links:§fmtFormatterResult()Error
Formats the value using the given formatter. Read more
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impl PartialEq for Precondition

Signature links:§PartialEqPrecondition
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fn eq(&self, other: &Precondition) -> bool

Signature links:§eqPreconditionbool
Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Signature links:unstableSource§ne&Rhsbool
Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for Precondition

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

Signature links:Source§AnySized
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fn type_id(&self) -> TypeId

Signature links:Source§type_idTypeId
Gets the TypeId of self. Read more
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impl<Src, Scheme> ApproxFrom<Src, Scheme> for Src
where Scheme: ApproxScheme,

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type Err = NoError

Signature links:§
The error type produced by a failed conversion.
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fn approx_from(src: Src) -> Result<Src, <Src as ApproxFrom<Src, Scheme>>::Err>

Signature links:§Result
Convert the given value into an approximately equivalent representation.
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impl<Dst, Src, Scheme> ApproxInto<Dst, Scheme> for Src
where Dst: ApproxFrom<Src, Scheme>, Scheme: ApproxScheme,

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type Err = <Dst as ApproxFrom<Src, Scheme>>::Err

Signature links:§
The error type produced by a failed conversion.
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fn approx_into(self) -> Result<Dst, <Src as ApproxInto<Dst, Scheme>>::Err>

Signature links:§Result
Convert the subject into an approximately equivalent representation.
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impl<T> Borrow<T> for T
where T: ?Sized,

Signature links:Source§BorrowSized
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fn borrow(&self) -> &T

Signature links:Source§borrow&T
Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

Signature links:Source§BorrowMutSized
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fn borrow_mut(&mut self) -> &mut T

Signature links:Source§borrow_mut&mut T
Mutably borrows from an owned value. Read more
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impl<T> ByRef<T> for T

Signature links:§
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fn by_ref(&self) -> &T

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impl<T> CloneToUninit for T
where T: Clone,

Signature links:Source§CloneToUninitClone
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unsafe fn clone_to_uninit(&self, dest: *mut u8)

Signature links:Source§clone_to_uninit*mut u8
🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T, Dst> ConvAsUtil<Dst> for T

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fn approx(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst>,

Signature links:§ResultSized
Approximate the subject with the default scheme.
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fn approx_by<Scheme>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst, Scheme>, Scheme: ApproxScheme,

Signature links:§ResultSized
Approximate the subject with a specific scheme.
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impl<T> ConvUtil for T

Signature links:§
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fn approx_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst>,

Signature links:§ResultSized
Approximate the subject to a given type with the default scheme.
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fn approx_as_by<Dst, Scheme>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst, Scheme>, Scheme: ApproxScheme,

Signature links:§ResultSized
Approximate the subject to a given type with a specific scheme.
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fn into_as<Dst>(self) -> Dst
where Self: Sized + Into<Dst>,

Signature links:§SizedInto
Convert the subject to a given type.
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fn try_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + TryInto<Dst>,

Signature links:§ResultSized
Attempt to convert the subject to a given type.
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fn value_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + ValueInto<Dst>,

Signature links:§ResultSized
Attempt a value conversion of the subject to a given type.
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impl<T> DistributionExt for T
where T: ?Sized,

Signature links:§Sized
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fn rand<T>(&self, rng: &mut (impl Rng + ?Sized)) -> T
where Self: Distribution<T>,

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impl<T> From<T> for T

Signature links:Source§From
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fn from(t: T) -> T

Signature links:Source§from

Returns the argument unchanged.

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

Signature links:Source§IntoFrom
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fn into(self) -> U

Signature links:Source§into

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> IntoEither for T

Signature links:Source§IntoEither
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fn into_either(self, into_left: bool) -> Either<Self, Self>

Signature links:Source§into_eitherboolEither
Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Signature links:Source§into_either_withEitherFnOncebool
Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

Signature links:§
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const ALIGN: usize

Signature links:§usize
The alignment of pointer.
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type Init = T

Signature links:§
The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Signature links:§usize
Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Signature links:§usize&'a T
Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Signature links:§usize&'a mut T
Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Signature links:§usize
Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

Signature links:Source§Same
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type Output = T

Signature links:Source§Output
Should always be Self
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impl<SS, SP> SupersetOf<SS> for SP
where SS: SubsetOf<SP>,

Signature links:§
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fn to_subset(&self) -> Option<SS>

Signature links:§Option
The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
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fn is_in_subset(&self) -> bool

Signature links:§bool
Checks if self is actually part of its subset T (and can be converted to it).
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fn to_subset_unchecked(&self) -> SS

Signature links:§
Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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fn from_subset(element: &SS) -> SP

Signature links:§&SS
The inclusion map: converts self to the equivalent element of its superset.
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impl<T> ToOwned for T
where T: Clone,

Signature links:Source§ToOwnedClone
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type Owned = T

Signature links:Source§Owned
The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

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

Signature links:Source§clone_into&mut T
Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<Src> TryFrom<Src> for Src

Signature links:§
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type Err = NoError

Signature links:§
The error type produced by a failed conversion.
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fn try_from(src: Src) -> Result<Src, <Src as TryFrom<Src>>::Err>

Signature links:§Result
Convert the given value into the subject type.
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

Signature links:Source§TryFromInto
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type Error = Infallible

Signature links:Source§ErrorInfallible
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>

Signature links:Source§try_fromResultTryFromError
Performs the conversion.
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impl<Src, Dst> TryInto<Dst> for Src
where Dst: TryFrom<Src>,

Signature links:§
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type Err = <Dst as TryFrom<Src>>::Err

Signature links:§
The error type produced by a failed conversion.
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fn try_into(self) -> Result<Dst, <Src as TryInto<Dst>>::Err>

Signature links:§Result
Convert the subject into the destination type.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Signature links:Source§TryIntoTryFrom
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type Error = <U as TryFrom<T>>::Error

Signature links:Source§ErrorTryFromError
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>

Signature links:Source§try_intoResultTryFromError
Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

Signature links:§
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fn vzip(self) -> V

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impl<Src> ValueFrom<Src> for Src

Signature links:§
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type Err = NoError

Signature links:§
The error type produced by a failed conversion.
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fn value_from(src: Src) -> Result<Src, <Src as ValueFrom<Src>>::Err>

Signature links:§Result
Convert the given value into an exactly equivalent representation.
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impl<Src, Dst> ValueInto<Dst> for Src
where Dst: ValueFrom<Src>,

Signature links:§
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type Err = <Dst as ValueFrom<Src>>::Err

Signature links:§
The error type produced by a failed conversion.
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fn value_into(self) -> Result<Dst, <Src as ValueInto<Dst>>::Err>

Signature links:§Result
Convert the subject into an exactly equivalent representation.
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T, U> Imply<T> for U
where T: ?Sized, U: ?Sized,

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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T> Scalar for T
where T: 'static + Clone + PartialEq + Debug,