[−][src]Struct arrow::buffer::Buffer
Buffer is a contiguous memory region of fixed size and is aligned at a 64-byte boundary. Buffer is immutable.
Methods
impl Buffer
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pub fn from_raw_parts(ptr: *const u8, len: usize) -> Self
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Creates a buffer from an existing memory region (must already be byte-aligned)
pub fn len(&self) -> usize
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Returns the number of bytes in the buffer
pub fn is_empty(&self) -> bool
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Returns whether the buffer is empty.
pub fn data(&self) -> &[u8]
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Returns the byte slice stored in this buffer
pub fn slice(&self, offset: usize) -> Self
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Returns a slice of this buffer, starting from offset
.
pub fn raw_data(&self) -> *const u8
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Returns a raw pointer for this buffer.
Note that this should be used cautiously, and the returned pointer should not be stored anywhere, to avoid dangling pointers.
pub fn typed_data<T: ArrowNativeType + Num>(&self) -> &[T]
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View buffer as typed slice.
pub fn empty() -> Self
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Returns an empty buffer.
Trait Implementations
impl From<Buffer> for Bitmap
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impl<T: AsRef<[u8]>> From<T> for Buffer
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Creating a Buffer
instance by copying the memory from a AsRef<[u8]>
into a newly
allocated memory region.
impl PartialEq<Buffer> for Buffer
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impl Clone for Buffer
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fn clone(&self) -> Buffer
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fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl Sync for Buffer
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impl Send for Buffer
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impl Debug for Buffer
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impl<'_> Not for &'_ Buffer
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impl<'a, 'b> BitAnd<&'b Buffer> for &'a Buffer
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type Output = Result<Buffer>
The resulting type after applying the &
operator.
fn bitand(self, rhs: &'b Buffer) -> Result<Buffer>
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impl<'a, 'b> BitOr<&'b Buffer> for &'a Buffer
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Auto Trait Implementations
Blanket Implementations
impl<T> From<T> for T
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impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
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>,