Index - B
| BDeque | ClassyPrelude | 
| Bifunctor | ClassyPrelude | 
| bimap | ClassyPrelude | 
| BiPolyMap | ClassyPrelude | 
| BlazeBuilder | ClassyPrelude | 
| BlockBuffering | ClassyPrelude | 
| Bool | ClassyPrelude | 
| bool | ClassyPrelude | 
| Bounded | ClassyPrelude | 
| BPMKeyConstraint | ClassyPrelude, ClassyPrelude | 
| bracket | ClassyPrelude | 
| bracketOnError | ClassyPrelude | 
| bracketOnError_ | ClassyPrelude | 
| bracket_ | ClassyPrelude | 
| break | ClassyPrelude | 
| breakLine | ClassyPrelude | 
| breakWord | ClassyPrelude | 
| BRef | ClassyPrelude | 
| BufferMode | ClassyPrelude | 
| Builder | ClassyPrelude | 
| builderToLazy | ClassyPrelude | 
| ByteString | ClassyPrelude | 
| ByteStringBuilder | ClassyPrelude |