flags

func Bool(name string, value bool, usage string, required bool) *bool

func Duration(name string, value time.Duration, usage string, required bool) *time.Duration

func Float64(name string, value float64, usage string, required bool) *float64

func Int(name string, value int, usage string, required bool) *int

func Parse()

func StrSlice(name string, usage string, required bool) *strSlice

func String(name string, value string, usage string, required bool) *string

func WithDescription(s string)

func WithExtra(s string)