- 開始日期：2014-10-07
- RFC PR: rust-lang/rfcs#342
- Rust 議題：rust-lang/rust#17862
摘要
將 abstract、final 和 override 保留為可能的關鍵字。
動機
We intend to add some mechanism to Rust to support more efficient inheritance (see, e.g., RFC PRs #245 and #250, and this thread on discuss). Although we have not decided how to do this, we do know that we will. Any implementation is likely to make use of keywords virtual (already used, to remain reserved), abstract, final, and override, so it makes sense to reserve these now to make the eventual implementation as backwards compatible as possible.
詳細設計
Make abstract, final, and override reserved keywords.
Drawbacks
Takes a few more words out of the possible vocabulary of Rust programmers.
替代方案
Don’t do this and deal with it when we have an implementation. This would mean bumping the language version, probably.
未解決的問題
N/A