Function validatron::validators::option_min

pub fn option_min<L, R>(value: &Option<L>, min_value: R) -> Result<()> where
    L: PartialOrd<R> + Display,
    R: Display, 

Check that an optional value is either none or greater than a value

let x = None::<u64>;
assert!(option_min(&x, 1).is_ok());
assert!(option_min(&Some(1.0), 2.0).is_err());
assert!(option_min(&Some(3), 2).is_ok());