Index - T
| tan | Prelude |
| tanh | Prelude |
| Text | Prelude |
| thd3 | Prelude |
| thd4 | Prelude |
| toInteger | Prelude |
| trace | Prelude |
| traceEvent | Prelude |
| traceEventIO | Prelude |
| traceId | Prelude |
| traceIO | Prelude |
| traceM | Prelude |
| traceMarker | Prelude |
| traceMarkerIO | Prelude |
| traceShow | Prelude |
| traceShowId | Prelude |
| traceShowM | Prelude |
| traceStack | Prelude |
| True | Prelude |
| truncate | Prelude |
| tuple2To3a | Prelude |
| tuple2To3b | Prelude |
| tuple2To3c | Prelude |
| tuple3To4a | Prelude |
| tuple3To4b | Prelude |
| tuple3To4c | Prelude |
| tuple3To4d | Prelude |
| tuple4To5a | Prelude |
| tuple4To5b | Prelude |
| tuple4To5c | Prelude |
| tuple4To5d | Prelude |
| tuple4To5e | Prelude |