Index - T
| tan | Prelude |
| tanh | Prelude |
| Text | 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 |