nn
Classes:
| Name | Description | 
|---|---|
| ModuleDefaultDict | Holds submodules in a dictionary and calls a factory function to supply missing values. | 
    
              Bases: ModuleDict, Generic[ModuleT]
Holds submodules in a dictionary and calls a factory function to supply missing values.
Parameters:
| Name | Type | Description | Default | 
|---|---|---|---|
|                    | Callable[[], ModuleT] | None | A no argument constructor for missing  | None | 
|                    | ModuleT | Initial dictionary values. | {} |