Macro fact 

macro_rules! fact {
    ($predicate:expr, $($args:tt)*) => { ... };
}

Convenience macro to construct a Fact from a predicate and a list of arguments.

Arguments can either take “literal” syntax, i.e. User{"123"} or can be Rust literals, i.e. 123.

Example

use oso_cloud::{fact, Fact, Value};

let fact: Fact = fact!("has_role", User { "1" }, "member", Repo { "1" });

assert_eq!(fact.args[0], Value::new("User", "1"));