pub fn decode_from_slice<T: CanonicalDecode>(
bytes: &[u8],
) -> Result<(T, usize), CodecError>Expand description
Decodes a value from a byte slice and returns the value plus unread byte count.
Examples found in repository?
examples/basic_encoding.rs (line 16)
5fn main() -> Result<(), CodecError> {
6 let port = 8080u16;
7 let encoded = encode_to_vec(&port)?;
8 assert_eq!(encoded, [0x90, 0x1f]);
9 assert_eq!(decode_from_slice_exact::<u16>(&encoded)?, port);
10
11 let text = "api";
12 let encoded = encode_to_vec(text)?;
13 assert_eq!(encoded, [3, 0, 0, 0, b'a', b'p', b'i']);
14 assert_eq!(decode_from_slice_exact::<String>(&encoded)?, text);
15
16 let (value, remaining) = decode_from_slice::<u8>(&[1, 2])?;
17 assert_eq!(value, 1);
18 assert_eq!(remaining, 1);
19
20 let err = decode_from_slice_exact::<u8>(&[1, 2]).unwrap_err();
21 assert_eq!(err.kind(), CodecErrorKind::TrailingBytes);
22
23 Ok(())
24}