必需文件
- zlib
- active_support/core_ext/array/extract_options
- active_support/core_ext/enumerable
- active_support/core_ext/module/attribute_accessors
- active_support/core_ext/numeric/bytes
- active_support/core_ext/object/to_param
- active_support/core_ext/object/try
- active_support/core_ext/string/inflections
命名空间