Index - I
| Id | Data.Function.HT |
| if' | Data.Bool.HT |
| ifThenElse | Data.Bool.HT |
| implies | Data.Bool.HT |
| index | Data.Ix.Enum |
| inits | Data.List.HT |
| inRange | |
| 1 (Function) | Data.Ix.Enum |
| 2 (Function) | Data.Ord.HT |
| isAscending | Data.List.HT |
| isAscendingLazy | Data.List.HT |
| iterate | Control.Monad.HT |
| iterateAssociative | Data.List.HT |
| iterateLeaky | Data.List.HT |
| iterateLimit | Control.Monad.HT |
| iterateLimitM | Control.Monad.HT |