[−][src]Trait arrow::array::BufferBuilderTrait
Required methods
fn new(capacity: usize) -> Self
fn len(&self) -> usize
fn capacity(&self) -> usize
fn advance(&mut self, i: usize) -> Result<()>
fn reserve(&mut self, n: usize) -> Result<()>
fn append(&mut self, v: T::Native) -> Result<()>
fn append_slice(&mut self, slice: &[T::Native]) -> Result<()>
fn finish(&mut self) -> Buffer
Implementors
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
.
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
.