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EnumVariantSchema

Struct EnumVariantSchema 

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pub struct EnumVariantSchema {
    pub discriminant: u32,
    pub name: String,
    pub payload: Box<DynamicSchema>,
}
Expand description

One variant of a DynamicSchema::Enum description.

discriminant is the varint u32 postcard writes for this variant (postcard uses the Rust enum’s declaration order, so the first variant has discriminant 0, the second 1, and so on — #[serde(other)] / explicit discriminants change this). name is the Rust variant identifier carried through to the decoded Dynamic::Enum so a Migrate::migrate impl can distinguish variants by name. payload is the variant’s inner shape, Boxed because DynamicSchema is self-referential.

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§discriminant: u32

Postcard’s varint u32 discriminant for this variant.

§name: String

The Rust variant identifier, carried into Dynamic::Enum verbatim.

§payload: Box<DynamicSchema>

Wire shape of the variant’s payload. Use DynamicSchema::Null for unit variants; DynamicSchema::Map for tuple and struct variants (synthetic numeric names for tuple variants); the inner type’s schema for newtype variants.

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impl EnumVariantSchema

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pub fn new<S: Into<String>>( discriminant: u32, name: S, payload: DynamicSchema, ) -> Self

Convenience constructor: lift a (discriminant, name, payload) triple into an EnumVariantSchema. The Box around the payload is added internally.

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impl Clone for EnumVariantSchema

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fn clone(&self) -> EnumVariantSchema

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

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

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

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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 PartialEq for EnumVariantSchema

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fn eq(&self, other: &EnumVariantSchema) -> bool

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for EnumVariantSchema

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impl StructuralPartialEq for EnumVariantSchema

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *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> 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> ToOwned for T
where 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 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.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V