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# pretty.rs
[](https://github.com/Marwes/pretty.rs/actions/workflows/build.yml)
[](https://docs.rs/pretty)
Pretty printing combinators for Rust
## Synopsis
This crate provides functionality for defining pretty printers. It is
particularly useful for printing structured recursive data like trees.
The implementation was originally based on Larsen's SML translation
(https://github.com/kfl/wpp) of Wadler's Haskell pretty printer
(https://homepages.inf.ed.ac.uk/wadler/papers/prettier/prettier.pdf). It
has since been modified in various ways to better fit Rust's
programming model. In particular, it uses iteration rather than
recursion and provides streaming output.
## Documentation
See the generated API documentation [here](https://docs.rs/pretty).
## Requirements
1. [Rust](https://www.rust-lang.org/)
2. [Cargo](https://crates.io/)
You can install both with the following:
```
$ curl -s https://static.rust-lang.org/rustup.sh | sudo sh
```
See [Installation](https://doc.rust-lang.org/book/ch01-01-installation.html) for further details.
## Usage
```
$ cargo build ## build library and binary
$ cargo run --example trees ## run the example (pretty trees)
$ cargo run --example colored --features termcolor ## run the example (pretty colored output)
$ cargo bench ## run benchmarks
$ cargo test ## run tests
```
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