Trait collection::Meta

pub trait Meta<T> where Self: Clone, T: Val {
    fn from_t(t: &T) -> Self;
    fn merge(&mut self, other: &Self, _t: PhantomData<T>);
}

Metadata for T

Required Methods

fn from_t(t: &T) -> Self

Construct a metadata value from &T

fn merge(&mut self, other: &Self, _t: PhantomData<T>)

Merge two metadata values, (M, M) -> M

Implementors

• impl<T> Meta<T> for Max<T> where T: Val + Ord + PartialEq
• impl<T> Meta<T> for Key<T::Key> where T: Val + Keyed
• impl<T> Meta<T> for CheckSum<u64> where T: Val + Hash