Macro defaults 

macro_rules! defaults {
    [$($value:expr),* $(,)?] => { ... };
}

Create a Vec from string literals.

Examples

use usage::defaults;

let values = defaults!["value1", "value2", "value3"];
assert_eq!(values, vec!["value1".to_string(), "value2".to_string(), "value3".to_string()]);