Crate easy_node

Smart pointer for graph nodes.

The author of this crate is not good at English. Forgive me if the document is hard to read.

This crate provides some smart pointers optimized for managing graph data structures.

• Nr - like Rc
• Nw - like Weak.
• NrCell - newtype of Nr<RefCell<T>>.
• NwCell - newtype of Nw<RefCell<T>>.

These smart pointers behavior is similar to Rc and Weak.
However, there are several important differences between them.

Point1 - Comparison of smart pointers

This crate smart pointer comparison is based on location.
This allows smart pointers to be used as HashSet values, etc.

For example, comparison of Nr::eq is based on identity of node address.
On the other hand comparison of Rc::eq is based on inner value.

Point2 - Upgrade from weak pointer

This crate weak pointer supports upgrade to strong pointer reference.
This allows smart pointers act as dynamic object directly.

For example, Nw::upgrade_ref returns Nr reference.
On the other hand Nw::upgrade returns Nr itself.
This is semilar to Weak::upgrade that returns Rc itself.

Structs

• Nr
  Strong reference to node.
• NrCell
  Strong reference to cell node.
• Nw
  Weak reference to node.
• NwCell
  Weak reference to cell node.