Trait

org.scalactic

Normalization

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trait Normalization[A] extends AnyRef

Defines a custom way to normalize instances of a type.

For example, to normalize Doubles by truncating off any decimal part, you might write:

import org.scalactic._

val truncated =
  new Normalization[Double] {
   def normalized(d: Double) = d.floor
 }

Given this definition you could use it with the Explicitly DSL like this:

import org.scalatest._
import Matchers._
import TypeCheckedTripleEquals._

(2.1 should === (2.0)) (after being truncated)

Note that to use a Normalization with the Explicitly DSL, you'll need to use TypeCheckedTripleEquals. If you're just using plain-old TripleEquals, you'll need a Uniformity, a Normalization subclass.

If you make the truncated val implicit and import or mix in the members of NormMethods, you can access the behavior by invoking .norm on Doubles.

implicit val doubleNormalization = truncated
import NormMethods._

val d = 2.1
d.norm // returns 2.0

A

the type whose normalization is being defined

Self Type
Normalization[A]
Source
Normalization.scala
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Abstract Value Members

  1. abstract def normalized(a: A): A

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    Returns a normalized form of the passed object.

    Returns a normalized form of the passed object.

    If the passed object is already in normal form, this method may return the same instance passed.

    a

    the object to normalize

    returns

    the normalized form of the passed object

Concrete Value Members

  1. final def !=(arg0: Any): Boolean

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  2. final def ##(): Int

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  3. final def ==(arg0: Any): Boolean

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  4. final def and(other: Normalization[A]): Normalization[A]

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    Returns a new Normalization that composes this and the passed Normalization.

    Returns a new Normalization that composes this and the passed Normalization.

    The normalized method of the Normalization returned by this method returns a normalized form of the passed object obtained by forwarding the passed value first to this Normalization's normalized method, then passing that result to the other Normalization's normalized method. Essentially, the body of the composed normalized method is:

    normalizationPassedToAnd.normalized(normalizationOnWhichAndWasInvoked.normalized(a))
    

    other

    a Normalization to 'and' with this one

    returns

    a Normalization representing the composition of this and the passed Normalization

  5. final def asInstanceOf[T0]: T0

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  6. def clone(): AnyRef

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  7. final def eq(arg0: AnyRef): Boolean

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  8. def equals(arg0: Any): Boolean

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  9. def finalize(): Unit

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  10. final def getClass(): Class[_]

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  11. def hashCode(): Int

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  12. final def isInstanceOf[T0]: Boolean

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  13. final def ne(arg0: AnyRef): Boolean

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  14. final def notify(): Unit

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  15. final def notifyAll(): Unit

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  16. final def synchronized[T0](arg0: ⇒ T0): T0

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  17. final def toEquivalence(implicit equivalence: Equivalence[A]): NormalizingEquivalence[A]

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    Converts this Normalization to a NormalizingEquivalence[A] whose normalized method delegates to this Normalization[A] and whose afterNormalizationEquivalence field returns the implicitly passed Equivalence[A].

    Converts this Normalization to a NormalizingEquivalence[A] whose normalized method delegates to this Normalization[A] and whose afterNormalizationEquivalence field returns the implicitly passed Equivalence[A].

    equivalence

    the Equivalence that the returned NormalizingEquivalence will delegate to determine equality after normalizing both left and right (if appropriate) sides.

  18. def toString(): String

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  19. final def wait(): Unit

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  20. final def wait(arg0: Long, arg1: Int): Unit

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  21. final def wait(arg0: Long): Unit

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