40 lines
1.1 KiB
Markdown
40 lines
1.1 KiB
Markdown
# flat-tree
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[](https://drone.autonomic.zone/hyperpy/flat-tree)
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## Utilities for navigating flat trees
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> Flat Trees are the core data structure that power Hypercore feeds. They allow
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> us to deterministically represent a tree structure as a vector. This is
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> particularly useful because vectors map elegantly to disk and memory. Because
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> Flat Trees are deterministic and pre-computed, there is no overhead to using
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> them. In effect this means that Flat Trees are a specific way of indexing
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> into a vector more than they are their own data structure. This makes them
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> uniquely efficient and convenient to implement in a wide range of languages.
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## Install
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```sh
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$ pip install flat-tree
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```
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## Example
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```python
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from flat_tree import FlatTreeIterator
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tree_iter = FlatTreeIterator()
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print("tree index: ", tree_iter.index)
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print("tree first parent: ", tree_iter.parent())
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print("tree next parent", tree_iter.parent())
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```
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Output:
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```sh
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tree index: 0
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tree first parent: 1
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tree next parent 3
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```
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