Function postcard::to_slice_crc32

source · 
pub fn to_slice_crc32<'a, T>(
    value: &T,
    buf: &'a mut [u8],
    digest: Digest<'_, u32>,
) -> Result<&'a mut [u8]>
where
    T: Serialize + ?Sized,
Expand description

Conveniently serialize a T to the given slice, with the resulting slice containing data followed by a 32-bit CRC. The CRC bytes are included in the output buffer.

When successful, this function returns the slice containing the serialized and encoded message.

§Example

use crc::{Crc, CRC_32_ISCSI};

let mut buf = [0; 9];

let data: &[u8] = &[0x01, 0x00, 0x20, 0x30];
let crc = Crc::<u32>::new(&CRC_32_ISCSI);
let used = postcard::to_slice_crc32(data, &mut buf, crc.digest()).unwrap();
assert_eq!(used, &[0x04, 0x01, 0x00, 0x20, 0x30, 0x8E, 0xC8, 0x1A, 0x37]);

See the ser_flavors::crc module for the complete set of functions.