Error generated when trying to wait for a unwaitable thread.
Class JoinError( [code],[description],[extra] ) from \
Error( code, description, extra )
| code | A numeric error code. |
| description | A textual description of the error code. |
| extra | A descriptive message explaining the error conditions. |
This error is created when a wait operation is performed on a thread object representin an unjoinable thread.
See the Error class in the core module.