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Here

qbrs_core::scope

Struct Here 

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pub struct Here;
Expand description

Index marker: “found at the head of the list”.

Trait Implementations§

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impl<K, V, Tail> Field<K, Here> for RowCons<K, V, Tail>

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type Value = V

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type Rest = Tail

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fn peek(&self) -> &V

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fn pluck(self) -> (V, Tail)

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impl<T: Table, N: Nullability, Tail> Find<T, Here> for Cons<TableSlot<T, N>, Tail>

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type Nullability = N

The nullability T has in this scope (derived from how it was joined, not asserted manually).
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impl Position for Here

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const POSITION: u32 = 1

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impl<F, K, V, Tail> TakeNamed<F, Here> for RowCons<K, V, Tail>
where K: Spelled, F: Spelled<Name = <K as Named>::Name> + FieldValue<Value = V>,

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type Value = V

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type Rest = Tail

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fn take_named(self) -> (V, Tail)

Auto Trait Implementations§

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impl Freeze for Here

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impl RefUnwindSafe for Here

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impl Send for Here

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impl Sync for Here

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impl Unpin for Here

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impl UnsafeUnpin for Here

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impl UnwindSafe for Here

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