Create a multiplexing observer having no registered observers.
Declared in <ball_multiplexobserver.h>
explicit
MultiplexObserver(bslma::Allocator* basicAllocator = 0);Optionally specify a basicAllocator used to supply memory. If basicAllocator is 0, the currently installed default allocator is used.
| Name | Description |
|---|---|
| basicAllocator | memory allocator; null uses the default |