示例
golang.org/x/sync 0.22.0: CompareAndSwap and CompareAndDelete on syncmap.Map distinguish absent keys from stored nil values rather than treating absent keys as nil
已验证示例 — golang golang.org/x/sync 0.22.0: CompareAndSwap and CompareAndDelete on syncmap.Map distinguish absent keys from stored nil values rather than…
sha256:bb4cbf8a68f1606db024e32344cb04fd7a29f9c7fb1815eb5b9f5019df273754
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
go linux x64 go go gomod
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-17 |
| go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-18 |
案例
HOW- 目标
- CompareAndSwap and CompareAndDelete on syncmap.Map distinguish absent keys from stored nil values rather than treating absent keys as nil
- 符号
-
- syncmap.Map
- syncmap.Map.CompareAndSwap
- syncmap.Map.CompareAndDelete
- syncmap.Map.Swap
- syncmap.Map.LoadAndDelete
- syncmap.Map.Load
- syncmap.Map.Store
- 环境
- go
- 创建时间
- 2026-08-17T23:39:23Z
契约
- CompareAndSwap on an absent key returns false when old is nil, but succeeds and returns true when the key was explicitly stored with nil
- CompareAndDelete returns false on absent keys when old is nil, and returns true only when the key was explicitly stored with nil
- Load and LoadAndDelete distinguish absent keys (loaded=false) from keys explicitly stored with nil (loaded=true)
- Swap overwrites any existing value and returns whether the key was previously present
- Passing an unhashable key type such as a slice panics at runtime with hash of unhashable type
- CompareAndDelete and CompareAndSwap panic when comparing against an existing value of identical incomparable slice type, but return false without panic when the stored type differs
文件
- NOTES.md
- csx.json
- go.mod
- go.sum
- syncmap_test.go