构建多文件项目的结构
清晰地组织模块
构建多文件项目的结构 是 CoddyKit 上的免费 Zig Academy 课时。 这是第 2 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 Zig Academy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Zig Academy 课程共包含 4 节课。
本课时的部分内容尚未翻译，以英文显示。
One File Gets Crowded
As a program grows, a single main file turns into a wall of code. Splitting it into focused files keeps each part readable. 🗂️
main.zig Is the Entry
Your executable starts in main.zig, where the main function lives. It imports the other files and wires the program together.
const greet = @import("greet.zig");Group by Responsibility
Put related code in one file: parsing in parser.zig, output in render.zig. Each file owns a clear responsibility and a small surface.
A File Is a Module
Since a file is a struct, importing it gives you a tidy module. Its pub functions and types form that module's public API.
const parser = @import("parser.zig");
const ast = parser.parse(input);Use Folders for Scale
Group files into folders like src/net or src/cli. Import them with a relative path that includes the folder name.
const http = @import("net/http.zig");Re-export from One Place
A small root file can re-expose pieces from several files, giving callers a single import that gathers the whole module.
pub const http = @import("http.zig");
pub const dns = @import("dns.zig");Keep the API Small
Mark only what callers truly need as pub. Everything else stays private, so you can refactor internals without breaking other files.
Types Travel Too
Files export types, not just functions. A pub struct or enum in shapes.zig becomes shapes.Circle anywhere it is imported.
const shapes = @import("shapes.zig");
var c: shapes.Circle = undefined;Watch for Cycles
Two files that import each other can form a cycle. Zig tolerates many cases, but a cleaner layout puts shared types in a third file.
Tests Live Beside Code
Each file can hold its own test blocks next to the code they check. Splitting files keeps related tests close to what they verify.
test "add works" {
try std.testing.expect(add(2, 2) == 4);
}Name Files Predictably
Use clear, lowercase file names that hint at the contents, like token.zig or config.zig. Good names make imports read almost like prose.
const config = @import("config.zig");Quick Check
Recall how one file exposes its features to another.
Recap
You saw how to split code into focused files and folders, expose a small pub API, and even re-export through one root module. 🎯
常见问题解答
「构建多文件项目的结构」课时是免费的吗？
是的 — 「构建多文件项目的结构」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Zig Academy 课程的其余内容，请升级到 CoddyKit PRO。 Zig Academy 课程共包含 4 节课。
「构建多文件项目的结构」这节课中我会学到什么？
清晰地组织模块 你通过在浏览器中直接运行的动手代码来练习 Zig Academy，全天候 AI 导师会在你学习这节课的过程中回答你的问题。
学习 Zig Academy 需要有经验吗？
无需任何先前经验。CoddyKit 上的 Zig Academy 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 2 节课，共 4 节。
「构建多文件项目的结构」课时需要多长时间？
大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。
我能在这节 Zig Academy 课中编写并运行代码吗？
能。每节 Zig Academy 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。