Index - B
| Barrier | Control.Concurrent.Extra, Extra |
| BlockBuffering | System.IO.Extra |
| BlockedIndefinitelyOnMVar | |
| 1 (Data Constructor) | Control.Exception.Extra |
| 2 (Type/Class) | Control.Exception.Extra |
| BlockedIndefinitelyOnSTM | |
| 1 (Data Constructor) | Control.Exception.Extra |
| 2 (Type/Class) | Control.Exception.Extra |
| both | Data.Tuple.Extra, Extra |
| bracket | Control.Exception.Extra |
| bracketOnError | Control.Exception.Extra |
| bracket_ | Control.Exception.Extra |
| break | Data.List.Extra |
| breakEnd | Data.List.Extra, Extra |
| breakOn | Data.List.Extra, Extra |
| breakOnEnd | Data.List.Extra, Extra |
| BufferMode | System.IO.Extra |