Function decode_from_read_with_decoder 

pub fn decode_from_read_with_decoder<D, R>(
    reader: R,
) -> Result<D::Output, ReadError<D::Error>>
where
    D: Decoder + Default,
    R: BufRead,

Decodes an object from a buffered reader using a Decoder type.

Unlike decode_from_read, this takes a generic Decoder parameter, allowing use with decoders which don’t have a dedicated Decode implementer (e.g. CompactSizeDecoder).

Performance

For unbuffered readers (like std::fs::File or std::net::TcpStream), consider wrapping your reader with std::io::BufReader in order to use this function. This avoids frequent small reads, which can significantly impact performance.

Errors

Returns ReadError::Decode if the decoder encounters an error while parsing the data, or ReadError::Io if an I/O error occurs while reading.