slog::o!

macro_rules! o {
    () => { ... };
    ($($k:expr => $v:expr),*) => { ... };
}

Convenience function for building &[OwnedKeyValue]

#[macro_use]
extern crate slog;
use slog::drain::IntoLogger;

fn main() {
    let drain = slog::drain::discard();
    let root = drain.into_logger(o!("key1" => "value1", "key2" => "value2"));
}