write_into

Defines a trait built on top of io::Write to write things into it.

Example

use leb128;
use std::{convert, io};
use write_into::{WriteInto, write_into};

// https://en.wikipedia.org/wiki/LEB128
struct Leb128<T>(T);

impl<T> WriteInto for Leb128<T>
where
    // `leb128` crate uses `u64` and I'm too lazy to write multiple implementations (._.)
    T: convert::Into<u64>
{
    type Output = ();

    fn write_into(self, sink: &mut impl io::Write) -> io::Result<Self::Output> {
        leb128::write::unsigned(sink, self.0.into())?;
        Ok(())
    }
}

let mut buffer = Vec::new();
write_into(&mut buffer, Leb128(1337u32)).unwrap();