slog::o!

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

Convenience function for building &[OwnedKeyValue]

#[macro_use]
extern crate slog;

fn main() {
    let root = slog::Logger::new_root(o!("key1" => "value1", "key2" => "value2"));
}