| unboundValue |  | 
| 1 (Function) | Foreign.R.Internal, Foreign.R | 
| 2 (Function) | Language.R.Globals, Language.R, H.Prelude, H.Prelude.Interactive | 
| unfoldr | Data.Vector.SEXP | 
| unfoldrN | Data.Vector.SEXP | 
| unhexp | Language.R.HExp, H.Prelude, H.Prelude.Interactive | 
| unprotect | Foreign.R | 
| unprotectPtr | Foreign.R | 
| unsafeAccum | Data.Vector.SEXP | 
| unsafeCast | Foreign.R.Internal | 
| unsafeCoerce | Foreign.R.Internal, Foreign.R, Language.R, H.Prelude, H.Prelude.Interactive | 
| unsafeCopy |  | 
| 1 (Function) | Data.Vector.SEXP.Mutable | 
| 2 (Function) | Data.Vector.SEXP | 
| unsafeDrop |  | 
| 1 (Function) | Data.Vector.SEXP.Mutable | 
| 2 (Function) | Data.Vector.SEXP | 
| unsafeFreeze | Data.Vector.SEXP | 
| unsafeFromSEXP | Data.Vector.SEXP | 
| unsafeHead | Data.Vector.SEXP | 
| unsafeHeadM | Data.Vector.SEXP | 
| unsafeIndex | Data.Vector.SEXP | 
| unsafeIndexM | Data.Vector.SEXP | 
| unsafeInit |  | 
| 1 (Function) | Data.Vector.SEXP.Mutable | 
| 2 (Function) | Data.Vector.SEXP | 
| unsafeLast | Data.Vector.SEXP | 
| unsafeLastM | Data.Vector.SEXP | 
| unsafeMove | Data.Vector.SEXP.Mutable | 
| unsafeNew | Data.Vector.SEXP.Mutable | 
| unsafeRead | Data.Vector.SEXP.Mutable | 
| unsafeRelease |  | 
| 1 (Function) | Foreign.R.Internal, Foreign.R | 
| 2 (Function) | Data.Vector.SEXP.Mutable | 
| unsafeRunRegion | Language.R.Instance, Language.R, H.Prelude, H.Prelude.Interactive | 
| unsafeRunWithExecContext | H.Prelude, H.Prelude.Interactive | 
| unsafeSEXPToVectorPtr | Foreign.R.Internal, Foreign.R | 
| unsafeSlice |  | 
| 1 (Function) | Data.Vector.SEXP.Mutable | 
| 2 (Function) | Data.Vector.SEXP | 
| unsafeSwap | Data.Vector.SEXP.Mutable | 
| unsafeTail |  | 
| 1 (Function) | Data.Vector.SEXP.Mutable | 
| 2 (Function) | Data.Vector.SEXP | 
| unsafeTake |  | 
| 1 (Function) | Data.Vector.SEXP.Mutable | 
| 2 (Function) | Data.Vector.SEXP | 
| unsafeThaw | Data.Vector.SEXP | 
| unsafeToSEXP | Data.Vector.SEXP | 
| unsafeUpd | Data.Vector.SEXP | 
| unsafeVectorPtrToSEXP | Foreign.R.Internal, Foreign.R | 
| unsafeWrite | Data.Vector.SEXP.Mutable | 
| unSEXP | Foreign.R.Internal, Foreign.R | 
| unsexp | Foreign.R.Internal, Foreign.R | 
| unSomeSEXP | Foreign.R.Internal, Foreign.R, Language.R, H.Prelude, H.Prelude.Interactive | 
| unstablePartition | Data.Vector.SEXP |