The Leo Programming Language

Leo is a functional, statically-typed programming language built for writing private applications. ## Table of Contents * [🍎 Overview](#-overview) * [⚙️️ Build Guide](#-build-guide) * [🦀 Install Rust](#-install-rust) * [🐙 Build from Source Code](#-build-from-source-code) * [🦁 Update from Leo](#-update-from-leo) * [📦 Download using Cargo](#-download-using-cargo) * [🚀 Quick Start](#-quick-start) * [🧰 Troubleshooting](#-troubleshooting) * [📖 Documentation](#-documentation) * [🤝 Contributing](#-contributing) * [❤️ Contributors](#-contributors) * [🛡️ License](#-license) ## 🍎 Overview Welcome to the Leo programming language. Leo provides a high-level language that abstracts low-level cryptographic concepts and makes it easy to integrate private applications into your stack. Leo compiles to circuits making zero-knowledge proofs practical. The syntax of Leo is influenced by traditional programming languages like JavaScript, Scala, and Rust, with a strong emphasis on readability and ease-of-use. Leo offers developers with tools to sanity check circuits including unit tests, integration tests, and console functions. Leo is one part of a greater ecosystem for building private applications on [Aleo](https://aleo.org/). The language is currently in an alpha stage and is subject to breaking changes. ## ⚙️️ Build Guide ### 🦀 Install Rust We recommend installing Rust using [rustup](https://www.rustup.rs/). You can install `rustup` as follows: - macOS or Linux: ```bash curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh ``` - Windows (64-bit): Download the [Windows 64-bit executable](https://win.rustup.rs/x86_64) and follow the on-screen instructions. - Windows (32-bit): Download the [Windows 32-bit executable](https://win.rustup.rs/i686) and follow the on-screen instructions. ### 🐙 Build from Source Code We recommend installing Leo by building from the source code as follows: ```bash # Download the source code git clone https://github.com/AleoHQ/leo cd leo # Install 'leo' $ cargo install --path . ``` Now to use leo, in your terminal, run: ```bash leo ``` ### 🦁 Update from Leo You can update Leo to the latest version using the following command: ```bash leo update ``` Now to check the version of leo, in your terminal, run: ```bash leo --version ``` ### 📦 Download using Cargo You can also install Leo directly from [crates.io](https://crates.io/crates/leo) using `cargo`: ```bash cargo install leo-lang ``` Now to use leo, in your terminal, run: ```bash leo ``` ## 🚀 Quick Start Use the Leo CLI to create a new project ```bash # create a new `hello-world` Leo project leo new helloworld cd helloworld # build & setup & prove & verify leo run main 0u32 1u32 ``` The `leo new` command creates a new Leo project with a given name. The `leo run` command will compile the program into Aleo instructions and run it. Congratulations! You've just run your first Leo program. ## 🧰 Troubleshooting If you are having trouble installing and using Leo, please check out our [guide](docs/troubleshooting.md). If the issue still persists, please [open an issue](https://github.com/AleoHQ/leo/issues/new/choose). ## 📖 Documentation * [Hello World - Next Steps](https://developer.aleo.org/leo/hello) * [Leo Language Documentation](https://developer.aleo.org/leo/language) * [Leo ABNF Grammar](https://github.com/AleoHQ/grammars/blob/master/leo.abnf) * [Homepage](https://developer.aleo.org/overview/) ## 🤝 Contributing Please see our guidelines in the [developer documentation](./CONTRIBUTING.md) ## ❤️ Contributors View all Leo contributors [here](./CONTRIBUTORS.md). ## 🛡️ License [](./LICENSE.md)

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# aleo-testnet