Struct binjs_io::bytes::lengthwriter::LengthWriter

pub struct LengthWriter { /* fields omitted */ }

An implementation of Write that discards its data but remembers how many bytes were written.

Methods

impl LengthWriter

pub fn new() -> Self

Create an empty LengthWriter.

pub fn len(&self) -> Bytes

Return the number of bytes written since creation.

Trait Implementations

impl Default for LengthWriter

Important traits for LengthWriter

impl Write for LengthWriter

fn default() -> LengthWriter

Returns the "default value" for a type.

impl Write for LengthWriter

fn flush(&mut self) -> Result<(), Error>

Do nothing.

fn write(&mut self, buf: &[u8]) -> Result<usize, Error>

Pretend to successfully write bytes, only record the number of bytes meant to be written.

fn write_vectored(&mut self, bufs: &[IoSlice]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this writer.

fn write_fmt(&mut self, fmt: Arguments) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Self

Creates a "by reference" adaptor for this instance of Write.