Trait DataKey 

pub trait DataKey:
    Clone
    + Debug
    + Default
    + PartialEq
    + Eq
    + 'static {
    // Required methods
    fn make_id(&self, parent: &Id) -> Id;
    fn reconstruct_key(parent: &Id, child: &Id) -> Option<Self>;
}

Bounds on the key type

Required Methods

fn make_id(&self, parent: &Id) -> Id

Make an Id for a key

The result must be distinct from parent. Use Id::make_child.

fn reconstruct_key(parent: &Id, child: &Id) -> Option<Self>

Reconstruct a key from an Id

Where child is the output of Self::make_id for the same parent or any Id descended from that, this should return a copy of the key passed to make_id.

See: Id::next_key_after, Id::iter_keys_after

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl DataKey for (usize, usize)

fn make_id(&self, parent: &Id) -> Id

fn reconstruct_key(parent: &Id, child: &Id) -> Option<Self>

impl DataKey for ()

fn make_id(&self, parent: &Id) -> Id

fn reconstruct_key(parent: &Id, child: &Id) -> Option<Self>

impl DataKey for usize

fn make_id(&self, parent: &Id) -> Id

fn reconstruct_key(parent: &Id, child: &Id) -> Option<Self>

Implementors