Macro ctx 

macro_rules! ctx {
    () => { ... };
    ( $( $key:ident : $value:expr ),* $(,)? ) => { ... };
}

Build a Context from key/value pairs. Values may be any type that implements IntoValue — &str, String, integer types, bool, Vec<&str>, [&str; N], or an explicit Value::*.

Trailing commas are allowed. Empty ctx! {} produces an empty context.

Example

use prosaic_core::{ctx, Context, Value};

let c: Context = ctx! {
    entity_type: "class",
    name: "UserService",
    consumer_count: 3,
    consumers: ["ProfileComponent", "SettingsComponent", "AdminModule"],
};

assert_eq!(c.get("entity_type"), Some(&Value::String("class".into())));
assert_eq!(c.get("consumer_count"), Some(&Value::Number(3)));