Index - T
| tail | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| tails | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| take | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| takeBaseName | Hydrogen.Prelude.System | 
| takeDirectory | Hydrogen.Prelude.System | 
| takeDrive | Hydrogen.Prelude.System | 
| takeExtension | Hydrogen.Prelude.System | 
| takeExtensions | Hydrogen.Prelude.System | 
| takeFileName | Hydrogen.Prelude.System | 
| takeMVar | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| takeWhile | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| tan | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| tanh | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| terminateProcess | Hydrogen.Prelude.System | 
| testBit | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| testBitDefault | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| TextEncoding | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| threadCapability | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| threadDelay | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| ThreadId | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| ThreadKilled | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| threadWaitRead | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| threadWaitReadSTM | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| threadWaitWrite | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| threadWaitWriteSTM | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| throw | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| throwIO | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| throwTo | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| TimeOfDay | |
| 1 (Data Constructor) | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| 2 (Type/Class) | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| timeOfDayToDayFraction | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| timeOfDayToTime | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| timeout | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| timeToTimeOfDay | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| TimeZone | |
| 1 (Data Constructor) | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| 2 (Type/Class) | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| timeZoneMinutes | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| timeZoneName | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| timeZoneOffsetString | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| timeZoneOffsetString' | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| timeZoneSummerOnly | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| TitlecaseLetter | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| toChar | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| todHour | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| todMin | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| todSec | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| toEnum | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| toException | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| toGregorian | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| toInteger | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| toList | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| toLower | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| toModifiedJulianDay | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| toRational | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| toTitle | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| toUpper | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| transpose | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| traverse_ | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| True | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| truncate | Hydrogen.Prelude, Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| try | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| tryJust | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| tryPutMVar | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| tryReadMVar | Hydrogen.Prelude.IO, Hydrogen.Prelude.System | 
| tryTakeMVar | Hydrogen.Prelude.IO, Hydrogen.Prelude.System |