trait NewType[O, N] extends OldType[O, N]

The purpose of this type class is to give further application code a way to talk about this "new type" encoding. So that converting to and from the underlying type can be done with as little boilerplate as possible in inter-op with 3rd party libraries, and other classes.

O

O for old type. i.e. the underlying runtime type

N

N for new type. i.e. the type that ought to live only in the compiler

Source
NewType.scala
See also

sprout.SproutShow as an example. We can easily provide a Show instance for N if the underlying representation has one. And it's opt in. This principle is then extended to a host of 3rd party libraries to eliminate boilerplate. See the sprout-interop github repo for many other examples.

Linear Supertypes
OldType[O, N], AnyRef, Any
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Inherited
  1. NewType
  2. OldType
  3. AnyRef
  4. Any
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Visibility
  1. Public
  2. Protected

Abstract Value Members

  1. abstract def newType(o: O): N
    Annotations
    @inline()
  2. abstract def oldType(n: N): O
    Definition Classes
    OldType
    Annotations
    @inline()
  3. abstract def symbolicName: String

    Ought to be used only for pretty printing and debug messages, not intented to represent extremly precise and consistent values that can be relied on in mission critical code

    Ought to be used only for pretty printing and debug messages, not intented to represent extremly precise and consistent values that can be relied on in mission critical code

    returns

    e.g. object TestValue extends Sprout[Int] type TestValue = TestValue.Type returns "TestValue"

    Definition Classes
    OldType

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[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  8. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  9. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  10. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  11. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  12. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  13. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  14. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  15. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  16. def toString(): String
    Definition Classes
    AnyRef → Any
  17. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  18. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  19. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()

Inherited from OldType[O, N]

Inherited from AnyRef

Inherited from Any

Ungrouped