ValueVTable

Enum ValueVTable 

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#[repr(C)]
pub enum ValueVTable { Sized(ValueVTableSized), Unsized(ValueVTableUnsized), }
Expand description

A vtable representing the operations that can be performed on a type, either for sized or unsized types.

This enum encapsulates the specific vtables for sized (ValueVTableSized) and unsized (ValueVTableUnsized) shapes, allowing generic type-agnostic dynamic dispatch for core capabilities (clone, drop, compare, hash, etc).

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Sized(ValueVTableSized)

VTable for operations on sized types.

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Unsized(ValueVTableUnsized)

VTable for operations on unsized types.

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impl ValueVTable

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pub const fn sized(&self) -> Option<&ValueVTableSized>

Returns a reference to the ValueVTableSized if this vtable is for a sized type.

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  • Some(&ValueVTableSized) if the type is sized.
  • None if the type is unsized.
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pub const fn sized_mut(&mut self) -> Option<&mut ValueVTableSized>

Returns a mutable reference to the ValueVTableSized if this vtable is for a sized type.

§Returns
  • Some(&mut ValueVTableSized) if the type is sized.
  • None if the type is unsized.
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pub const fn unsized(&self) -> Option<&ValueVTableUnsized>

Returns a reference to the ValueVTableUnsized if this vtable is for an unsized type.

§Returns
  • Some(&ValueVTableUnsized) if the type is unsized.
  • None if the type is sized.
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pub fn marker_traits(&self) -> MarkerTraits

Get the marker traits implemented for the type

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pub const fn type_name(&self) -> TypeNameFn

Get the type name fn of the type

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pub fn is_eq(&self) -> bool

Check if the type implements the Eq marker trait

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pub fn is_send(&self) -> bool

Check if the type implements the Send marker trait

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pub fn is_sync(&self) -> bool

Check if the type implements the Sync marker trait

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pub fn is_copy(&self) -> bool

Check if the type implements the Copy marker trait

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pub fn is_unpin(&self) -> bool

Check if the type implements the Unpin marker trait

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pub fn is_unwind_safe(&self) -> bool

Check if the type implements the UnwindSafe marker trait

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pub fn is_ref_unwind_safe(&self) -> bool

Check if the type implements the RefUnwindSafe marker trait

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pub fn has_display(&self) -> bool

Returns true if the type implements the Display trait and the display function is available in the vtable.

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pub fn has_debug(&self) -> bool

Returns true if the type implements the Debug trait and the debug function is available in the vtable.

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pub fn has_partial_eq(&self) -> bool

Returns true if the type implements the PartialEq trait and the partial_eq function is available in the vtable.

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pub fn has_partial_ord(&self) -> bool

Returns true if the type implements the PartialOrd trait and the partial_ord function is available in the vtable.

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pub fn has_ord(&self) -> bool

Returns true if the type implements the Ord trait and the ord function is available in the vtable.

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pub fn has_hash(&self) -> bool

Returns true if the type implements the Hash trait and the hash function is available in the vtable.

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pub fn has_default_in_place(&self) -> bool

Returns true if the type supports default-in-place construction via the vtable.

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pub fn has_clone_into(&self) -> bool

Returns true if the type supports in-place cloning via the vtable.

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pub fn has_parse(&self) -> bool

Returns true if the type supports parsing from a string via the vtable.

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pub const fn builder<T>() -> ValueVTableBuilder<T>

Creates a new ValueVTableBuilder

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pub const fn builder_unsized<T: ?Sized>() -> ValueVTableBuilderUnsized<T>

Trait Implementations§

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impl Clone for ValueVTable

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fn clone(&self) -> ValueVTable

Returns a duplicate 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 ValueVTable

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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 ValueVTable

Auto Trait Implementations§

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.