Method compare

crates/gitql-core/src/values/date.rs:38–43

(&self, other: &Box<dyn Value>)

    }

    fn compare(&self, other: &Box<dyn Value>) -> Option<Ordering> {
        if let Some(other_date) = other.as_any().downcast_ref::<DateValue>() {
            return self.timestamp.partial_cmp(&other_date.timestamp);
        }
        None
    }

    fn data_type(&self) -> Box<dyn DataType> {
        Box::new(DateType)