# Struct rustc_query_impl::query_impl::vtable_allocation::QueryType

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    pub struct QueryType<'tcx> {
        data: PhantomData<&'tcx ()>,
    }

## Fields§

§`data: PhantomData<&'tcx ()>`

## Trait Implementations§

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### impl<'tcx> Clone for QueryType<'tcx>

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#### fn clone(&self) -> QueryType<'tcx>

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<'tcx> Default for QueryType<'tcx>

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#### fn default() -> QueryType<'tcx>

Returns the “default value” for a type. Read more
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### impl<'tcx> QueryConfigRestored<'tcx> for QueryType<'tcx>

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#### type RestoredValue = AllocId

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#### type Config = DynamicConfig<'tcx, DefaultCache<(Ty<'tcx>, Option<Binder<'tcx, ExistentialTraitRef<'tcx>>>), Erased<impl Copy>>, false, false, false>

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#### const NAME: &'static &'static str = _

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#### fn config(tcx: TyCtxt<'tcx>) -> Self::Config

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#### fn restore(value: Erased<impl Copy>) -> Self::RestoredValue

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### impl<'tcx> Copy for QueryType<'tcx>

## Auto Trait Implementations§

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### impl<'tcx> RefUnwindSafe for QueryType<'tcx>

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### impl<'tcx> Send for QueryType<'tcx>

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### impl<'tcx> Sync for QueryType<'tcx>

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### impl<'tcx> Unpin for QueryType<'tcx>

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### impl<'tcx> UnwindSafe for QueryType<'tcx>

## 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> 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.

## 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.

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