xflag

func Func ¶

func Func[T any](name, usage string, fn func(string) (T, error)) *T

Func is like [flags.Func], but avoids the need for an init func by allocating its own storage for the return value.

func Lookup ¶

func Lookup[T any](name string) T

Lookup looks up a flag by name of the given type.

Panics if this flag is of the wrong type, or if the flag value is not a flag.Getter.

func Parsed ¶

func Parsed(name string) bool

Parsed returns whether the given flag was parsed.