Index - F
| f | Turtle.Format, Turtle |
| filename | Turtle |
| FilePath | Turtle |
| fileSize | Turtle.Prelude, Turtle |
| FileStatus | Turtle.Prelude, Turtle |
| find | Turtle.Prelude, Turtle |
| findtree | Turtle.Prelude, Turtle |
| fixed | Turtle.Pattern, Turtle |
| Fold | |
| 1 (Data Constructor) | Turtle |
| 2 (Type/Class) | Turtle |
| fold | Turtle.Shell, Turtle |
| foldIO | Turtle.Shell, Turtle |
| FoldM | |
| 1 (Data Constructor) | Turtle |
| 2 (Type/Class) | Turtle |
| FoldShell | |
| 1 (Type/Class) | Turtle.Shell, Turtle |
| 2 (Data Constructor) | Turtle.Shell, Turtle |
| foldShell | Turtle.Shell, Turtle |
| forever | Turtle |
| fork | Turtle.Prelude, Turtle |
| Format | Turtle.Format, Turtle |
| format | Turtle.Format, Turtle |
| fp | Turtle.Format, Turtle |
| fromString | Turtle |
| fromText | Turtle |