Index - D
| decimal | Numeric.Optics |
| declareClassy | Optics, Optics.TH |
| declareClassyFor | Optics, Optics.TH |
| declareFieldLabels | Optics, Optics.TH |
| declareFieldLabelsFor | Optics, Optics.TH |
| declareFieldLabelsWith | Optics, Optics.TH |
| declareFields | Optics, Optics.TH |
| declareLenses | Optics, Optics.TH |
| declareLensesFor | Optics, Optics.TH |
| declareLensesWith | Optics, Optics.TH |
| declarePrisms | Optics, Optics.TH |
| defaultFieldRules | Optics, Optics.TH |
| DefName | Optics, Optics.TH |
| devoid | Optics, Optics.Indexed, Optics.IxLens |
| dividing | Numeric.Optics |