샘플

github.com/spf13/pflag 1.0.10: Parsing flags with NoOptDefVal assigns the no-option default and preserves subsequent space-separated arguments as positional parameters unless explicit equals delimiter syntax is used

검증된 샘플 — golang github.com/spf13/pflag 1.0.10: Parsing flags with NoOptDefVal assigns the no-option default and preserves subsequent space-separated…

sha256:cc2c397664e089bf5638765dcfb834232cd669f9970283902c9b8947b773b043

MIT-0

실행 증거

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

선언된 환경 go linux x64 go go go

환경	컨트랙트	단계	실행일
go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1	2026-08-16
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

HOW

목표: Parsing flags with NoOptDefVal assigns the no-option default and preserves subsequent space-separated arguments as positional parameters unless explicit equals delimiter syntax is used
패키지: github.com/spf13/pflag 1.0.10
심벌: pflag.FlagSet.StringVarP
pflag.FlagSet.Lookup
pflag.Flag.NoOptDefVal
pflag.FlagSet.Parse
pflag.FlagSet.Args
pflag.FlagSet.Changed
환경: go
생성일: 2026-08-16T12:28:14Z

fs.Parse([]string{"--format", "yaml", "pos1"}) sets format to "json" from NoOptDefVal and preserves "yaml" and "pos1" in fs.Args()
fs.Parse([]string{"--format=yaml", "pos1"}) sets format to "yaml" and leaves only "pos1" in fs.Args()
fs.Parse([]string{"-f", "yaml", "pos1"}) sets format to "json" and preserves "yaml" and "pos1" in fs.Args()
fs.Parse([]string{"-f=yaml", "pos1"}) sets format to "yaml" and leaves only "pos1" in fs.Args()
fs.Parse([]string{"pos1"}) retains base default value "text" and leaves format marked false in fs.Changed()
fs.Parse([]string{"--format"}) sets format to "json" and marks format as true in fs.Changed()