hello-world-cargo

Table of Contents📚

• What is cargo❓
• Creating a new project🆕
• Compiling and running a program with cargo🏃
  • Just compiling
  • Compiling and running🏃

Hello world with cargo🚢

What is cargo❓

Cargo is a Rust package manager. It is used to manage dependencies and build Rust projects.

Creating a new project🆕

We will create a new project called hello-world-cargo, to do this, we will use the following command.

ℹ️ the --bin parameter flags the project as an application, not a library.

$ cargo new hello-world-cargo --bin

> Created binary (application) `hello-world-cargo` package.

This command created a new folder 📂 hello-world-cargo in the current directory.

This folder contains a 📄 Cargo.toml file, a 📂 src folder and a 📄 main.rs file.

hello-world-cargo
├── Cargo.toml
├── .git
│   └── ...
├── .gitignore
└── src
    └── main.rs

It also initialized a git repository for the project.

The 📂 src folder contains the source code of the application, in it there already is a 📄 main.rs file containing an hello world program.

// 📄 main.rs
fn main() {
    println!("Hello, world 👋");
}

File	Description
📄 Cargo.toml	The Cargo manifest file, this file contains all the dependencies and the application name.
📂 src	The source folder, this folder contains the source code of the application.
📄 main.rs	The main file, this file contains the source code of the application.
📂 .git	The git folder, this folder contains all the git files, you can ignore this folder if you don't use git.
📄 .gitignore	The git ignore file, this file contains all the files that should be ignored when committing.

Compiling and running a program with cargo🏃

Just compiling

To compile the program, we will use the cargo build command.

# hello-world-cargo 📂
$ cargo build

This command will compile the program and create an executable file called 📄 hello-world-cargo in the new 📂 target/debug folder.

# hello-world-cargo/target/debug 📂
$ ./hello-world-cargo
> Hello, world 👋

Compiling and running🏃

To compile and run the program, we will use the cargo run command.

# hello-world-cargo 📂
$ cargo run
...
> Hello, world 👋

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Course created by SkwalExe and inspired by Dcode