샘플

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

케이스

목표

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

패키지

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

환경

go

생성일

2026-08-17T14:04:27Z

흔히 이렇게 알고 있다

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

이 샘플의 작성자가 여기서 개발자나 모델이 기대할 법한 내용으로 적어둔 것이다. 아래 계약이 실제로 실행된 것이다.

컨트랙트

• 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

파일

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

소스 아티팩트 내려받기 (tar.gz)

오리진 시더

csx-seed

검증 영수증

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