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Remove impl<T: AsRef<[u8]>> From<T> for Buffer that easily accidentally copies data #6043

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merged 3 commits into from
Jul 16, 2024
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Remove impl<T: AsRef<[u8]>> From<T> for Buffer that easily accidentally copies data #6043

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f841880
deprecate auto copy, ask explicit reference
XiangpengHao Jul 11, 2024
b14698f
update comments
XiangpengHao Jul 13, 2024
468ba57
make cargo doc happy
XiangpengHao Jul 13, 2024
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25 changes: 15 additions & 10 deletions arrow-buffer/src/buffer/immutable.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -356,16 +356,21 @@ impl Buffer {
}
}

/// Creating a `Buffer` instance by copying the memory from a `AsRef<[u8]>` into a newly
/// allocated memory region.
impl<T: AsRef<[u8]>> From<T> for Buffer {
fn from(p: T) -> Self {
// allocate aligned memory buffer
let slice = p.as_ref();
let len = slice.len();
let mut buffer = MutableBuffer::new(len);
buffer.extend_from_slice(slice);
buffer.into()
impl From<&[u8]> for Buffer {
fn from(p: &[u8]) -> Self {
Self::from_slice_ref(p)
}
}

impl<const N: usize> From<[u8; N]> for Buffer {
fn from(p: [u8; N]) -> Self {
Self::from_slice_ref(p)
}
}

impl<const N: usize> From<&[u8; N]> for Buffer {
fn from(p: &[u8; N]) -> Self {
Self::from_slice_ref(p)
}
}

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