[](https://www.elegantobjects.org) [](https://www.jetbrains.com/idea/) [](https://github.com/objectionary/sot/actions/workflows/cargo.yml) [](https://crates.io/crates/sot) [](http://www.0pdd.com/p?name=objectionary/sot) [](https://codecov.io/gh/objectionary/sot) [](https://hitsofcode.com/view/github/objectionary/sot)  [](https://github.com/objectionary/sot/blob/master/LICENSE.txt) This Rust library helps you build an object tree for [reo](https://github.com/objectionary/reo) compiler of [EO](https://www.eolang.org) programs. Create a tree: ```rust use sot::Sot; let mut sot = Sot::empty(); sot.add(0)?; // add a vertex no.0 sot.add(1)?; // add a vertex no.1 sot.bind(0, 1, "foo")?; // connect v0 to v1 with label "foo" sot.put(1, "Hello, world!".as_bytes().to_vec())?; // attach data to v1 ``` You can find a vertex by the label of an edge departing from another vertex: ```rust let id = sot.kid(0, "foo")?; // returns 1 ``` You can find all kids of a vertex: ```rust let kids: Vec<(String, u32)> = sot.kids(0); ``` You can read the data of a vertex: ```rust let bytes: Vec = sot.data(1)?; // empty if no data written before ``` Then, you can print the tree: ```rust println!("{:?}", sot); ``` Also, you can serialize and deserialize the tree.