Function postcard::to_vec

pub fn to_vec<T: ?Sized, const B: usize>(value: &T) -> Result<Vec<u8, B>> where
    T: Serialize + ?Sized, 

Serialize a T to a heapless::Vec<u8>, with the Vec containing data in a serialized format. Requires the (default) heapless feature.

Example

use postcard::to_vec;
use heapless::Vec;
use core::ops::Deref;

let ser: Vec<u8, 32> = to_vec(&true).unwrap();
assert_eq!(ser.deref(), &[0x01]);

let ser: Vec<u8, 32> = to_vec("Hi!").unwrap();
assert_eq!(ser.deref(), &[0x03, b'H', b'i', b'!']);

// NOTE: postcard handles `&[u8]` and `&[u8; N]` differently.
let data: &[u8] = &[0x01u8, 0x00, 0x20, 0x30];
let ser: Vec<u8, 32> = to_vec(data).unwrap();
assert_eq!(ser.deref(), &[0x04, 0x01, 0x00, 0x20, 0x30]);

let data: &[u8; 4] = &[0x01u8, 0x00, 0x20, 0x30];
let ser: Vec<u8, 32> = to_vec(data).unwrap();
assert_eq!(ser.deref(), &[0x01, 0x00, 0x20, 0x30]);