Type synonym for an indexed getter.
Moduleoptics-core-0.4.2Haskell2010
Optics.IxGetter
An IxGetter is an indexed version of a Getter. See the
"Indexed optics" section of the overview documentation in the Optics module
of the main optics package for more details on indexed optics.
- 2 types
- 4 values
- Packageoptics-core-0.4.2
- Exports6
- LanguageHaskell2010
- LicenceBSD-3-Clause
- SourceIxGetter.hs
Formation
1 declarationIntroduction
2 declarationsBuild an indexed getter from a function.
iview (ito id) ('i', 'x')('i','x')
Use a value itself as its own index. This is essentially an indexed version of equality.
Elimination
2 declarationsView the value pointed to by an indexed getter.
View the function of the value pointed to by an indexed getter.
Subtyping
1 declarationTag for a getter.
Instances29ReversibleOptic, Is, JoinKinds, IxOptic, ToReadOnly, MappingOptic, …
ReversibleOptic A_GetterDefined in optics-core-0.4.2 · Optics.ReIs A_Getter A_FoldDefined in optics-core-0.4.2 · Optics.Internal.Optic.SubtypingIs A_Getter An_AffineFoldDefined in optics-core-0.4.2 · Optics.Internal.Optic.SubtypingIs A_Lens A_GetterDefined in optics-core-0.4.2 · Optics.Internal.Optic.SubtypingIs A_ReversedPrism A_GetterDefined in optics-core-0.4.2 · Optics.Internal.Optic.SubtypingIs An_Iso A_GetterDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ A_Fold => JoinKinds A_Fold A_Getter kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ A_Fold => JoinKinds A_Getter A_Fold kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ A_Fold => JoinKinds A_Getter A_Traversal kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ A_Fold => JoinKinds A_Traversal A_Getter kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ A_Getter => JoinKinds A_Getter A_Getter kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ A_Getter => JoinKinds A_Getter A_Lens kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ A_Getter => JoinKinds A_Getter A_ReversedPrism kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ A_Getter => JoinKinds A_Getter An_Iso kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ A_Getter => JoinKinds A_Lens A_Getter kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ A_Getter => JoinKinds A_ReversedPrism A_Getter kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ A_Getter => JoinKinds An_Iso A_Getter kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ An_AffineFold => JoinKinds A_Getter A_Prism kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ An_AffineFold => JoinKinds A_Getter An_AffineFold kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ An_AffineFold => JoinKinds A_Getter An_AffineTraversal kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ An_AffineFold => JoinKinds A_Prism A_Getter kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ An_AffineFold => JoinKinds An_AffineFold A_Getter kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtypingk ~ An_AffineFold => JoinKinds An_AffineTraversal A_Getter kDefined in optics-core-0.4.2 · Optics.Internal.Optic.Subtyping(s ~ t, a ~ b) => IxOptic A_Getter s t a bDefined in optics-core-0.4.2 · Optics.Indexed.Core(s ~ t, a ~ b) => ToReadOnly A_Getter s t a bDefined in optics-core-0.4.2 · Optics.ReadOnly(Functor f, f ~ g, s ~ t, a ~ b) => MappingOptic A_Getter f g s t a bDefined in optics-core-0.4.2 · Optics.MappingExample1 expression [('a', True), ('b', False)] ^. _1 %& mapping"ab"
Example2 expressions let v = [[ (('a', True), "foo"), (('b', False), "bar")], [ (('c', True), "xyz") ] ]v ^. _1 % _2 %& mapping %& mapping[[True,False],[True]]
type MappedOptic A_Getter = A_GetterDefined in optics-core-0.4.2 · Optics.Mappingtype ReversedOptic A_Getter = A_ReviewDefined in optics-core-0.4.2 · Optics.Retype ReadOnlyOptic A_Getter = A_GetterDefined in optics-core-0.4.2 · Optics.ReadOnly