Package, Crate, and Modules - i need help

Package, Crate, and Modules

#The_Rust_Programming_Language

Overview

複雑なプロジェクト

実装とAPIの分離にも役立つ

スコープの概念

キーワード

- Packages(Rust): A Cargo feature that lets you build, test, and share crates

- Crates: A tree of modules that produces a library or executable

- Modules(Rust) and use: Let you control the organization, scope, and privacy of paths

- Paths(Rust): A way of naming an item, such as a struct, function, or module

TOC

Packages and Crates

Defining Modules to Control Scope and Privacy

Paths for Referring to an Item in the Module Tree

Bringing Paths Into Scope with the use Keyword

Separating Modules into Different Files

Packages and Crates

crate root = コンパイラがスタートするソースファイルでroot moduleをなすもの

package = 機能提供する1以上のcrate

Cargo.toml

at most 1 lib crate

as many bin crate

at least 1 crate

cargo newはパッケージを作る

src/main.rs, src/lib.rsがあるとbin crate, lib crate

src/bin

crateで名前を修飾して区別できる rand::Rngとか

Defining Modules to Control Scope and Privacy

Paths for Referring to an Item in the Module Tree

Bringing Paths Into Scope with the use Keyword

Separating Modules into Different Files