Struct VecWriter 

pub struct VecWriter { /* private fields */ }

A writer that batches multiple small writes for vectored I/O.

This reduces the number of system calls by accumulating writes and sending them as a single vectored write operation.

Implementations

impl VecWriter

pub const fn new() -> Self

Create a new vectored writer.

pub fn with_capacity(capacity: usize) -> Self

Create a vectored writer with the specified chunk capacity.

pub fn push(&mut self, data: impl Into<Bytes>)

Add bytes to the writer.

pub fn push_slice(&mut self, data: &[u8])

Add a slice to the writer (copies into a new Bytes).

pub const fn chunk_count(&self) -> usize

Get the number of chunks.

pub const fn len(&self) -> usize

Get the total length across all chunks.

pub const fn is_empty(&self) -> bool

Check if the writer is empty.

pub fn clear(&mut self)

Clear all chunks.

pub fn as_io_slices(&self) -> Vec<IoSlice<'_>>

Get the chunks as I/O slices for vectored writes.

The returned slices can be passed to write_vectored.

pub fn freeze(self) -> Bytes

Freeze all chunks into a single contiguous buffer.

This is useful when you need a single contiguous view.

pub fn write_to<W: Write>(&self, writer: &mut W) -> Result<usize>

Write all chunks to a writer using vectored I/O.

Errors

Returns an error if the write fails.

Trait Implementations

impl Debug for VecWriter

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

Formats the value using the given formatter.

impl Default for VecWriter

fn default() -> VecWriter

Returns the “default value” for a type.