OptionParser::Switch::OptionalArgument

Switch that can omit argument.

Public Instance Methods

parse(arg, argv, &error)

Parses argument if given, or uses default value.

 
               # File optparse.rb, line 688
def parse(arg, argv, &error)
  if arg
    conv_arg(*parse_arg(arg, &error))
  else
    conv_arg(arg)
  end
end