lenses

Type Members

1. trait BasicRules extends AnyRef

   

2. trait ExtraImplicits extends AnyRef

   

3. case class GetOrThrow[B](e: Either[Throwable, B]) extends Product with Serializable

   

4. type Id[T] = T

   

5. trait Join[M1[_], M2[_], R[_]] extends AnyRef

   

   This typeclass with its implicit instances decides how two containers should be joined.

   This typeclass with its implicit instances decides how two containers should be joined.

   Supported containers are

   • Id for scalar values
   • Option for optional values
   • Seq for a vector of values

   Those container types form an ordering from most specific to most abstract:

   • Id contains always one value
   • Option contains always zero or one value
   • Seq can contain any number of values

   The rule to determine what the result type of joining two container types is that the result is as generic as the more generic of both of the input types.

   The implicit definitions in the companion object of join form evidence for this ordering.

6. type JsPred = (JsValue) ⇒ Boolean

   

7. trait JsonPathIntegration extends AnyRef

   

8. trait Lens[M[_]] extends UpdateLens with ReadLens[M]

   

   A Lens combines read and update functions of UpdateLens and ReadLens into combinable chunks.

   A Lens combines read and update functions of UpdateLens and ReadLens into combinable chunks.

   A lens can either operate on a scalar value, or on an optional value, or on a sequence value. This is denoted by the M[_] type constructor.

9. abstract class LensImpl[M[_]] extends Lens[M]

   

   This implements most of the methods of Lens.

   This implements most of the methods of Lens. Implementors of a new type of lens must implement retr for the read side of the lens and updated for the update side of the lens.

10. type Operation = (SafeJsValue) ⇒ SafeJsValue

    

11. trait Operations extends OptionalFieldOperations

    

    Defines a set of operations to update Json values.

12. trait Ops[M[_]] extends AnyRef

    

    A trait to define common operations for different container types.

    A trait to define common operations for different container types. There's some bias towards Seq because container types have to support conversions towards and from Seq.

    This could probably made more general but the methods defined here comprise exactly the set of operations needed to allow combining different kinds of lenses.

13. type OptLens = Lens[Option]

    

14. trait OptionLenses extends AnyRef

    

15. trait OptionalFieldOperations extends AnyRef

    

16. trait ReadLens[M[_]] extends AnyRef

    

    The read lens can extract child values out of a JsValue hierarchy.

    The read lens can extract child values out of a JsValue hierarchy. A read lens is parameterized with a type constructor. This allows to extracts not only scalar values but also sequences or optional values.

    M

17. trait Reader[T] extends AnyRef

    

18. type SafeJsValue = Either[Exception, JsValue]

    

19. type ScalarLens = Lens[Id]

    

20. trait ScalarLenses extends AnyRef

    

21. type SeqLens = Lens[Seq]

    

22. trait SeqLenses extends AnyRef

    

23. trait Update extends (JsValue) ⇒ JsValue

    

24. trait UpdateLens extends AnyRef

    

    The UpdateLens is the central interface for updating a child element somewhere deep down a hierarchy of a JsValue.

25. case class ValidateOption[T](option: Option[T]) extends Product with Serializable

    

26. type Validated[T] = Either[Exception, T]