Default is mentioned occasionally in the book, but I think it could use its own page.
貢獻者指南
技術棧
rust
領域
documentation
議題類型
documentation
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
2
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Rust basicsUnderstanding of Default trait
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
80
研究方向
Add a new page to the Rust by Example book covering the Default trait, including examples of its usage, the `#[derive(Default)]` macro, and discussion of when it is appropriate to use Default versus implementing it manually. Refer to existing pages like those for `From` and `Into` for style and structure. Check the single comment on the issue for any additional context or suggestions.
