示例

Configure YAML decoding with yaml.AllowDuplicateMapKey to permit duplicate mapping keys and retain the latest value instead of failing with a syntax error

sha256:5dac961373b18c0b0dbf6de249512818668244b0f0d0efae8f309c2f73f303de

案例

目标

Configure YAML decoding with yaml.AllowDuplicateMapKey to permit duplicate mapping keys and retain the latest value instead of failing with a syntax error HOW

包

github.com/goccy/go-yaml v1.19.2

环境

go

创建时间

2026-08-17T14:04:27Z

常见的想当然

yaml.Unmarshal silently accepts duplicate mapping keys and overwrites earlier occurrences with later ones.

这是本样本作者记下的、开发者或模型在此处通常会有的预期。下面的契约才是真正运行过的东西。

契约

• assert yaml.Unmarshal rejects duplicate mapping keys with a SyntaxError by default, leaving destination values empty
• assert yaml.UnmarshalWithOptions with yaml.AllowDuplicateMapKey succeeds and retains the latest key value in document order
• assert yaml.NewDecoder with yaml.AllowDuplicateMapKey succeeds on streaming readers with duplicate mapping keys
• assert yaml.AllowDuplicateMapKey applies identically to nested struct fields and map targets

文件

• NOTES.md
• csx.json
• go.mod
• go.sum
• yaml_duplicate_key_test.go

下载源代码构件 (tar.gz)

原始种子者

csx-seed

验证回执

• go 1.26 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-17 · ed25519:d91480838ac982c9