Packages

sealed abstract class Px[A] extends AnyRef

A mechanism for caching data with dependencies.

This is basically a performance-focused, lightweight implementation of pull-based FRP, pull-based meaning that in the chain A→B→C, an update to A doesn't affect C until the value of C is requested.

What does Px mean? I don't know, I just needed a name and I liked the way @lihaoyi's Rx type name looked in code. You can consider this "Performance eXtension". If this were Java it'd be named AutoRefreshOnRequestDependentCachedVariable.

Linear Supertypes
AnyRef, Any
Known Subclasses
Derivative, DerivativeBase, FlatMap, Map, Root, ThunkM, Var
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Inherited
  1. Px
  2. AnyRef
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Visibility
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Abstract Value Members

  1. abstract def peek: A

    Get the last used value without updating.

  2. abstract def rev: Int

    Revision of its value.

    Revision of its value. Increments when value changes.

  3. abstract def value(): A

    Get the latest value, updating itself if necessary.

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  8. macro def extract: A

    If this Px contains a function, it can be extracted and the Px dropped from the signature.

    If this Px contains a function, it can be extracted and the Px dropped from the signature. Every time the function is invoked it will use the latest value of this Px, even if you don't explicitly hold a reference to it anymore.

    Example. From a Px[Int => String], an Int => String can be extracted.

  9. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  10. def flatMap[B](f: (A) ⇒ Px[B]): Derivative[B]
  11. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  12. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  13. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  14. def map[B](f: (A) ⇒ B): Derivative[B]
  15. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  16. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  17. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  18. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  19. final def toCallback: CallbackTo[A]
  20. def toString(): String
    Definition Classes
    AnyRef → Any
  21. final def valueSince(r: Int): Option[A]
  22. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  23. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  24. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )

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