示例
serde 1.0.229: Flattening an Option<T> field with serde silently instantiates Some(T) with all None fields when input keys are completely missing instead of evaluating to None
已验证示例 — cargo serde 1.0.229: Flattening an Option<T> field with serde silently instantiates Some(T) with all None fields when input keys are completely…
sha256:586fa2d13da8d07f8cba0752874e0d457509e3eb71c5c9f174986d8f12e9fb0b
本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。
提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。
MIT-0
执行证据
声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。
- 证据依据
- 签名契约通过
- 验证回执
- 2
- 构建过它的签名密钥
- 2
声明的环境
rust linux x64 rust rust cargo
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| rust 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-17 |
| rust 1 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-18 |
案例
HOW- 目标
- Flattening an Option<T> field with serde silently instantiates Some(T) with all None fields when input keys are completely missing instead of evaluating to None
- 符号
-
- serde::Deserialize
- 环境
- rust
- 创建时间
- 2026-08-17T02:34:45Z
契约
- Deserializing into Option<T> via #[serde(flatten)] where T has all Option fields returns Some(T) with None fields even when no relevant keys are present in JSON
- Deserializing into Option<T> via #[serde(flatten)] where T has required fields without defaults fails inner parsing and returns None when keys are missing
- Branching logic relying on if let Some(...) on flattened Option structs silently executes unexpectedly when inner fields are optional
文件
- .gitignore
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs