coalesce.rs

pub trait Coalesce {
    type Item;
    fn coalesce(self, other: Option<Self::Item>) -> Option<Self::Item>;
}

impl<T> Coalesce for Option<T> {
    type Item = T;

    fn coalesce(self, other: Option<T>) -> Option<T> {
        self.or(other)
    }
}