1/// A trait for computing the difference between two objects.
 2pub trait Diff<K: Ord + Clone, V: Clone> {
 3    type DiffType;
 4
 5    /// Returns a `Self::DiffType` object that represents the difference between this object and
 6    /// other.
 7    fn diff(&self, other: &Self) -> Self::DiffType;
 8}
 9
10/// A trait for applying the difference between two objects.
11pub trait ApplyDiff<K: Ord + Clone, V: Clone> {
12    type DiffType;
13
14    /// Applies the provided changes described by [DiffType] to the object implementing this trait.
15    fn apply(&mut self, diff: Self::DiffType);
16}