Struct mz_repr::adt::jsonb::vec_stack::VecStack

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pub struct VecStack<'a, T> {
    buf: &'a mut Vec<T>,
    i: usize,
}
Expand description

A VecStack presents as a stack of Vecs where only the vector at the top of the stack is accessible. It is backed by a single Vec whose allocation is reused as elements are added to and dropped from the stack, and so it can be more efficient than allocating individual vectors.

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§buf: &'a mut Vec<T>§i: usize

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impl<'a, T> VecStack<'a, T>

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pub fn new(buf: &'a mut Vec<T>) -> VecStack<'a, T>

Creates a new VecStack backed by buf.

The stack starts with a single psuedo-vector.

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pub fn push(&mut self, t: T)

Adds a new element to the psuedo-vector at the top of the stack.

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pub fn sort_by_key<F, K>(&mut self, f: F)
where F: FnMut(&T) -> K, K: Ord,

Sorts the psuedo-vector at the top of the stack by the key identified by f.

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pub fn len(&self) -> usize

Returns the length of the psuedo-vector at the top of the stack.

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pub fn fresh<'b>(&'b mut self) -> VecStack<'b, T>

Push a fresh vector onto the stack.

The returned VecStack is a handle to this vector. The psuedo-vector beneath the new vector is inaccessible until the new handle is dropped.

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impl<'a, T> Drop for VecStack<'a, T>

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl<'a, T> Index<usize> for VecStack<'a, T>

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type Output = T

The returned type after indexing.
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fn index(&self, i: usize) -> &Self::Output

Performs the indexing (container[index]) operation. Read more

Auto Trait Implementations§

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impl<'a, T> Freeze for VecStack<'a, T>

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impl<'a, T> RefUnwindSafe for VecStack<'a, T>
where T: RefUnwindSafe,

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impl<'a, T> Send for VecStack<'a, T>
where T: Send,

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impl<'a, T> Sync for VecStack<'a, T>
where T: Sync,

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impl<'a, T> Unpin for VecStack<'a, T>

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impl<'a, T> !UnwindSafe for VecStack<'a, T>

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, U> CastInto<U> for T
where U: CastFrom<T>,

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fn cast_into(self) -> U

Performs the cast.
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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> FutureExt for T

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fn with_context(self, otel_cx: Context) -> WithContext<Self>

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
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fn with_current_context(self) -> WithContext<Self>

Attaches the current Context to this type, returning a WithContext wrapper. Read more
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> IntoRequest<T> for T

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fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
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impl<T, U> OverrideFrom<Option<&T>> for U
where U: OverrideFrom<T>,

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fn override_from(self, layer: &Option<&T>) -> U

Override the configuration represented by Self with values from the given layer.
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<P, R> ProtoType<R> for P
where R: RustType<P>,

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<'a, S, T> Semigroup<&'a S> for T
where T: Semigroup<S>,

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fn plus_equals(&mut self, rhs: &&'a S)

The method of std::ops::AddAssign, for types that do not implement AddAssign.
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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

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,