# flat-tree [](https://drone.autonomic.zone/hyperpy/flat-tree) ## Utilities for navigating flat trees ```bash $ pip install flat-tree ``` Flat Trees are the core data structure that power Hypercore feeds. They allow us to deterministically represent a tree structure as a vector. This is particularly useful because vectors map elegantly to disk and memory. Because Flat Trees are deterministic and pre-computed, there is no overhead to using them. In effect this means that Flat Trees are a specific way of indexing into a vector more than they are their own data structure. This makes them uniquely efficient and convenient to implement in a wide range of languages.