pub trait WriteTo {
type Error;
// Required method
fn write_to<W: Write>(&self, output: W) -> Result<usize, Self::Error>;
}Expand description
Used to serialize types into an output stream (i.e. a Write
implementation).
§Example
This implements WriteTo for a simple TinyRational struct.
use read_from::WriteTo;
use std::io::{self, Write};
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct TinyRational {
numer: i8,
denom: u8
}
impl WriteTo for TinyRational {
type Error = io::Error;
fn write_to<W: Write>(&self, mut out: W) -> Result<usize, Self::Error> {
out.write_all(&[self.numer as u8, self.denom]).and(Ok(2))
}
}
let mut buf = Vec::new();
TinyRational { numer: 3, denom: 4 }.write_to(&mut buf).unwrap();
assert_eq!(buf, &[3, 4]);Required Associated Types§
Required Methods§
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.