샘플

csv 3.3.2: Handle custom converter registration in CSV::Converters with CSV::FieldInfo metadata, non-String converter short-circuiting, skip_lines filtering, and CSV.filter stream transformation in CSV 3.3.2

검증된 샘플 — gem csv 3.3.2: Handle custom converter registration in CSV::Converters with CSV::FieldInfo metadata, non-String converter short-circuiting…

sha256:8a8545c284e4585374983e887167cea95e9e8ba4e7e067eb4b7dd081d598e40f

MIT-0

실행 증거

선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.

선언된 환경 ruby linux x64 ruby ruby rubygems

환경	컨트랙트	단계	실행일
ruby 3 · linux debian/x64 · docker ed25519:d91480838ac982c9	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1	2026-08-17
ruby 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1	2026-08-18

HOW

목표: Handle custom converter registration in CSV::Converters with CSV::FieldInfo metadata, non-String converter short-circuiting, skip_lines filtering, and CSV.filter stream transformation in CSV 3.3.2
패키지: csv 3.3.2
심벌: CSV.parse
CSV.filter
CSV::Converters
CSV::FieldInfo
CSV::Row
환경: ruby
생성일: 2026-08-17T14:41:39Z

CSV::FieldInfo provides 0-based column index, 1-based logical line number, and transformed header symbol metadata to custom converters registered in CSV::Converters.
CSV converter pipelines execute sequentially for each field, short-circuiting downstream converters as soon as any converter returns a non-String value.
CSV.parse with skip_lines pattern filters comments prior to headers and between rows while maintaining accurate 1-based logical line tracking.
CSV.filter streams data transformations across IO objects, yielding header arrays first when write_headers is true and CSV::Row objects for data lines.
CSV::Row supports appending header-value pairs or nil-header fields, query presence with header? and field?, and column deletion returning key-value pairs.