Struct std::io::NullStream

A null stream (similar to /dev/null).

It behaves as a file of infinite capacity for writing and an empty file for reading.

Methods

• fn new() -> NullStream

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  Creates a new null stream.

• fn read(self: &mut NullStream, _buf: &mut [u8]) -> Result<usize>

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  Reads from the stream into a provided buffer.

  If successful, returns the number of bytes read. This may be less than the size of the provided buffer.

• fn read_exact(self: &mut NullStream, buf: &mut [u8]) -> Result<()>

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  Fills the provided buffer by reading from the stream.

  If stream had less bytes available than the size of the buffer, this method will return an Error::eof().

• fn read_to_end(self: &mut NullStream, _buf: &mut StringBuf) -> Result<usize>

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  Reads the entire stream into a StringBuf.

  If successful, returns the number of bytes that were read.

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

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  Write the buffer to the stream.

  Returns the number of bytes written. This may be less than the size of the buffer. See also write_all, which can be used to write the entire buffer.

• fn write_all(self: &mut NullStream, _buf: &[u8]) -> Result<()>

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  Writes all the bytes in the buffer to the stream.

  If EOF is reached, returns Error::eof().

• fn flush(self: &mut NullStream) -> Result<()>

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  Flush the stream

  This may be a no-op, depending on the stream.