Rust anatomy

Project Components

A rust project comprises of

packages	build/test/share a collection of crates
crates	tree of modules that build a single library, or executable
modules	organize scope/privacy of paths
paths	files ?

Packages

A package is a collection of crates.

• it may have multiple executable crates
• it may only have one library crate

Crates

A crate can be either

• a library (has src/lib.rs entrypoint)
• an executable (has src/main.rs entrypoint)

myproject/
  src/
    main.rs
  Cargo.toml
  Cargo.lock

Modules

Modules contain groups of related srcfiles.
modules are private to their parents by default, and public to their child modules.
the name/namespace of the module mirrors it's filesystem location.
the use keyword can merge a module or one of it's elements into the current namespace.

See more details in rust modules.