flag

func ParseFlag ¶

func ParseFlag(args []string, i *int) (string, func() (string, bool))

ParseFlag parses a flag from the args slice.

Usage example:

for i := 0; i < n; i++ {
  flag, value := flag.ParseFlag(args, &i)
  if flag == "" {
    remainArgs = append(remainArgs, args[i])
    continue
  }
  switch flag {
  case "-t", "--timeout":
    value, ok := value()
    if !ok {
      return fmt.Errorf("%s requires a value", flag)
    }
    ...
  default:
    return fmt.Errorf("unknown flag: %s", flag)
  }
}