Index - O
| odd | Control.Monad.Constrained, Control.Monad.Constrained.Ap |
| or | Control.Monad.Constrained, Control.Monad.Constrained.Ap |
| Ord | Control.Monad.Constrained, Control.Monad.Constrained.Ap |
| Ordering | Control.Monad.Constrained, Control.Monad.Constrained.Ap |
| otherwise | Control.Monad.Constrained, Control.Monad.Constrained.Ap |