Struct DigestWriter 

pub struct DigestWriter<W, D>
where
    W: Write,
    D: Digest,
{ /* private fields */ }

Available on crate feature digest only.

A writer wrapper that computes a digest while writing.

Implementations

impl<W, D> DigestWriter<W, D>

where W: Write, D: Digest,

pub fn new(inner: W) -> Self

Creates a new DigestWriter

pub fn finalize(self) -> Output<D>

Consumes the writer and returns the computed hash.

pub fn into_inner(self) -> W

Unwraps the inner writer.

Trait Implementations

impl<W, D> Debug for DigestWriter<W, D>

where W: Write + Debug, D: Digest + Debug,

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

Formats the value using the given formatter.

impl<W, D> Write for DigestWriter<W, D>

where W: Write, D: Digest,

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

Writes a buffer into this writer, returning how many bytes were written.

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

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination.

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

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

fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Writer has an efficient write_vectored implementation.

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

Attempts to write an entire buffer into this writer.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

🔬This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

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

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

where Self: Sized,

Creates a “by reference” adapter for this instance of Write.