Struct SnapBuf

pub struct SnapBuf { /* private fields */ }

Implementations

impl SnapBuf

pub fn new() -> Self

Creates an empty buffer.

pub fn resize_zero(&mut self, new_len: usize)

Resizes the buffer, so that len == new_len.

If new_len is greater than len, the new space in the buffer is filled with zeros.

pub fn write(&mut self, offset: usize, data: &[u8])

Writes data at the specified offset.

If this extends past the current end of the buffer, the buffer is automatically resized. If offset is larger than the current buffer length, the space between the current buffer end and the written region is filled with zeros.

pub fn is_empty(&self) -> bool

Returns true if the buffer length is zero.

pub fn len(&self) -> usize

Returns the length of the buffer, the number of bytes it contains.

The memory footprint of the buffer may be much smaller than this due to omission of zero segments and sharing with other buffers.

pub fn clear_range(&mut self, range: Range<usize>)

Clears data in range, possibly freeing memory.

Panics

Panics if range end is range.end > self.len().

pub fn clear(&mut self)

Clears all data and sets length to 0.

pub fn chunks(&self) -> impl Iterator<Item = &[u8]>

Returns an iterator over the byte slices constituting the buffer.

The returned slices may overlap.

pub fn iter(&self) -> impl Iterator<Item = &u8>

Returns an iterator over the buffer.

Trait Implementations

impl Debug for SnapBuf

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SnapBuf

fn default() -> Self

Returns the “default value” for a type.