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Missing

qbrs_core::insert

Struct Missing 

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pub struct Missing<C>(/* private fields */);
Expand description

A column an *Insert builder hasn’t been given a value for yet. Named after the column so the builder’s type says which one is missing, rather than leaving a bare () to be counted by position.

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impl<C> Default for Missing<C>

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl<C> Freeze for Missing<C>
where PhantomData<fn() -> C>: Freeze,

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impl<C> RefUnwindSafe for Missing<C>
where PhantomData<fn() -> C>: RefUnwindSafe,

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impl<C> Send for Missing<C>
where PhantomData<fn() -> C>: Send,

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impl<C> Sync for Missing<C>
where PhantomData<fn() -> C>: Sync,

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impl<C> Unpin for Missing<C>
where PhantomData<fn() -> C>: Unpin,

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impl<C> UnsafeUnpin for Missing<C>
where PhantomData<fn() -> C>: UnsafeUnpin,

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impl<C> UnwindSafe for Missing<C>
where PhantomData<fn() -> C>: UnwindSafe,

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<S> Superset<Nil, Nil> for S

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

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

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<T> WrapNullable<NotNull> for T

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type Output = T