[−][src]Struct arrow::array::BufferBuilder
Buffer builder with zero-copy build method
Trait Implementations
impl<T: ArrowPrimitiveType> BufferBuilderTrait<T> for BufferBuilder<T>
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default fn new(capacity: usize) -> Self
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Creates a builder with a fixed initial capacity
fn len(&self) -> usize
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Returns the number of array elements (slots) in the builder
fn capacity(&self) -> usize
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Returns the current capacity of the builder (number of elements)
default fn advance(&mut self, i: usize) -> Result<()>
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default fn reserve(&mut self, n: usize) -> Result<()>
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Reserves memory for n
elements of type T
.
default fn append(&mut self, v: T::Native) -> Result<()>
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Appends a value into the builder, growing the internal buffer as needed.
default fn append_slice(&mut self, slice: &[T::Native]) -> Result<()>
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Appends a slice of type T
, growing the internal buffer as needed.
default fn finish(&mut self) -> Buffer
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Reset this builder and returns an immutable Buffer
.
impl BufferBuilderTrait<BooleanType> for BufferBuilder<BooleanType>
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fn new(capacity: usize) -> Self
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Creates a builder with a fixed initial capacity.
fn advance(&mut self, i: usize) -> Result<()>
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fn append(&mut self, v: bool) -> Result<()>
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Appends a value into the builder, growing the internal buffer as needed.
fn append_slice(&mut self, slice: &[bool]) -> Result<()>
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Appends a slice of type T
, growing the internal buffer as needed.
fn reserve(&mut self, n: usize) -> Result<()>
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Reserves memory for n
elements of type T
.
fn finish(&mut self) -> Buffer
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Reset this builder and returns an immutable Buffer
.
fn len(&self) -> usize
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fn capacity(&self) -> usize
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Auto Trait Implementations
impl<T> Sync for BufferBuilder<T> where
T: Sync,
T: Sync,
impl<T> Unpin for BufferBuilder<T> where
T: Unpin,
T: Unpin,
impl<T> Send for BufferBuilder<T> where
T: Send,
T: Send,
impl<T> UnwindSafe for BufferBuilder<T> where
T: UnwindSafe,
T: UnwindSafe,
impl<T> RefUnwindSafe for BufferBuilder<T> where
T: RefUnwindSafe,
T: RefUnwindSafe,
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> FromCast<T> for T
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impl<T, U> Cast<U> for T where
U: FromCast<T>,
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U: FromCast<T>,