Rust Programming By Example

Test your installation

Let's try to build a Rust program. First, create a new project with cargo:

$ cargo new --bin hello_world
     Created binary (application) `hello_world` project

The --bin flag indicates that we want to create an executable project, as opposed to a library (which is the default without this flag). In the Rust world, a crate is a package of libraries and/or executable binaries.

This created a hello_world directory containing the following files and directory:

$ tree hello_world/
hello_world/
├── Cargo.toml
└── src
    └── main.rs

1 directory, 2 files

The Cargo.toml file is where the metadata (name, version, and so on) of your project resides, as well as its dependencies. The source files of your project are in the src directory. ...