A LinkedMap is a order-aware collection with the following properties:

• A head pointer
• A tail pointer
• A collection of items that can be added to, removed from, and traversed in either direction

I built this to have a collection I can traverse in either direction, but also be able to remove items in less-than-linear time. I also didn't want something that needed to be sorted or rebalanced after each addition or removal.

This uses Elixir's Map underneath, so removing arbitrary items can happen in logarithmic time, rather than linear time that most sorted collections incur.

Add linked_map to your list of dependencies in mix.exs:

def deps do
 [
 {:linked_map, "~> 0.2.0"}
 ]
end

See the documentation for API reference and examples.