Cargo

• Cargo is Rust’s build system and package manager.
• Cargo handles the following -
  • Building code.
  • Downloading libraries.
  • Build libraries/dependencies.
• You can use Cargo to create packages. Doing so does the following -
  • Cargo.toml file - Cargo configuration file.
  • src directory - contains main.rs.
  • Initializes a git repository with a .gitignore file.
• Packages of code are called crates.
• Building a Cargo project gives a Cargo.lock file.
  • This is important for reproducible builds.
  • Sets the versions on the initial cargo build run.
  • Versions are not changed until an explicit update is called.

Cargo Commands

1. Create a new project - cargo new
2. Build - cargo build
   • By default, build an executable with debug info.
   • Use cargo build --release for optimized binary.
   • Note, this would increase compile time.
3. Run - cargo run
4. Compilation check - cargo check
5. Update crate - cargo update
6. Format code - cargo fmt