scala.math

Ordering

object Ordering extends LowPriorityOrderingImplicits with Serializable

go to: companion
linear super types: Serializable, Serializable, LowPriorityOrderingImplicits, AnyRef, Any
source: Ordering.scala
Ordering
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  1. Ordering
  2. Serializable
  3. Serializable
  4. LowPriorityOrderingImplicits
  5. AnyRef
  6. Any
Visibility
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Impl.
  1. Concrete
  2. Abstract

Type Members

  1. trait BigDecimalOrdering extends Ordering[BigDecimal]

  2. trait BigIntOrdering extends Ordering[BigInt]

  3. trait BooleanOrdering extends Ordering[Boolean]

  4. trait ByteOrdering extends Ordering[Byte]

  5. trait CharOrdering extends Ordering[Char]

  6. trait DoubleOrdering extends Ordering[Double]

  7. trait ExtraImplicits extends AnyRef

  8. trait FloatOrdering extends Ordering[Float]

  9. trait IntOrdering extends Ordering[Int]

  10. trait LongOrdering extends Ordering[Long]

  11. trait OptionOrdering [T] extends Ordering[Option[T]]

  12. trait ShortOrdering extends Ordering[Short]

  13. trait StringOrdering extends Ordering[String]

  14. trait UnitOrdering extends Ordering[Unit]

Value Members

  1. def != ( arg0 : AnyRef ) : Boolean

    attributes: final
    definition classes: AnyRef
  2. def != ( arg0 : Any ) : Boolean

    o != arg0 is the same as !(o == (arg0)).

    o != arg0 is the same as !(o == (arg0)).

    arg0

    the object to compare against this object for dis-equality.

    returns

    false if the receiver object is equivalent to the argument; true otherwise.

    attributes: final
    definition classes: Any
  3. def ## () : Int

    attributes: final
    definition classes: AnyRef → Any
  4. def $asInstanceOf [T0] () : T0

    attributes: final
    definition classes: AnyRef
  5. def $isInstanceOf [T0] () : Boolean

    attributes: final
    definition classes: AnyRef
  6. def == ( arg0 : AnyRef ) : Boolean

    o == arg0 is the same as if (o eq null) arg0 eq null else o.equals(arg0).

    o == arg0 is the same as if (o eq null) arg0 eq null else o.equals(arg0).

    arg0

    the object to compare against this object for equality.

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    attributes: final
    definition classes: AnyRef
  7. def == ( arg0 : Any ) : Boolean

    o == arg0 is the same as o.equals(arg0).

    o == arg0 is the same as o.equals(arg0).

    arg0

    the object to compare against this object for equality.

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    attributes: final
    definition classes: Any
  8. object BigDecimal extends BigDecimalOrdering

    attributes: implicit
  9. object BigInt extends BigIntOrdering

    attributes: implicit
  10. object Boolean extends BooleanOrdering

    attributes: implicit
  11. object Byte extends ByteOrdering

    attributes: implicit
  12. object Char extends CharOrdering

    attributes: implicit
  13. object Double extends DoubleOrdering

    attributes: implicit
  14. object Float extends FloatOrdering

    attributes: implicit
  15. object Implicits extends ExtraImplicits

    An object for implicits which for one reason or another we aren't ready to put in the default scope.

  16. object Int extends IntOrdering

    attributes: implicit
  17. implicit def Iterable [T] (implicit ord : Ordering[T] ) : Ordering[Iterable[T]]

    attributes: implicit
  18. object Long extends LongOrdering

    attributes: implicit
  19. implicit def Option [T] (implicit ord : Ordering[T] ) : Ordering[Option[T]]

    attributes: implicit
  20. object Short extends ShortOrdering

    attributes: implicit
  21. object String extends StringOrdering

    attributes: implicit
  22. implicit def Tuple2 [T1, T2] (implicit ord1 : Ordering[T1] , ord2 : Ordering[T2] ) : Ordering[(T1, T2)]

    attributes: implicit
  23. implicit def Tuple3 [T1, T2, T3] (implicit ord1 : Ordering[T1] , ord2 : Ordering[T2] , ord3 : Ordering[T3] ) : Ordering[(T1, T2, T3)]

    attributes: implicit
  24. implicit def Tuple4 [T1, T2, T3, T4] (implicit ord1 : Ordering[T1] , ord2 : Ordering[T2] , ord3 : Ordering[T3] , ord4 : Ordering[T4] ) : Ordering[(T1, T2, T3, T4)]

    attributes: implicit
  25. implicit def Tuple5 [T1, T2, T3, T4, T5] (implicit ord1 : Ordering[T1] , ord2 : Ordering[T2] , ord3 : Ordering[T3] , ord4 : Ordering[T4] , ord5 : Ordering[T5] ) : Ordering[(T1, T2, T3, T4, T5)]

    attributes: implicit
  26. implicit def Tuple6 [T1, T2, T3, T4, T5, T6] (implicit ord1 : Ordering[T1] , ord2 : Ordering[T2] , ord3 : Ordering[T3] , ord4 : Ordering[T4] , ord5 : Ordering[T5] , ord6 : Ordering[T6] ) : Ordering[(T1, T2, T3, T4, T5, T6)]

    attributes: implicit
  27. implicit def Tuple7 [T1, T2, T3, T4, T5, T6, T7] (implicit ord1 : Ordering[T1] , ord2 : Ordering[T2] , ord3 : Ordering[T3] , ord4 : Ordering[T4] , ord5 : Ordering[T5] , ord6 : Ordering[T6] , ord7 : Ordering[T7] ) : Ordering[(T1, T2, T3, T4, T5, T6, T7)]

    attributes: implicit
  28. implicit def Tuple8 [T1, T2, T3, T4, T5, T6, T7, T8] (implicit ord1 : Ordering[T1] , ord2 : Ordering[T2] , ord3 : Ordering[T3] , ord4 : Ordering[T4] , ord5 : Ordering[T5] , ord6 : Ordering[T6] , ord7 : Ordering[T7] , ord8 : Ordering[T8] ) : Ordering[(T1, T2, T3, T4, T5, T6, T7, T8)]

    attributes: implicit
  29. implicit def Tuple9 [T1, T2, T3, T4, T5, T6, T7, T8, T9] (implicit ord1 : Ordering[T1] , ord2 : Ordering[T2] , ord3 : Ordering[T3] , ord4 : Ordering[T4] , ord5 : Ordering[T5] , ord6 : Ordering[T6] , ord7 : Ordering[T7] , ord8 : Ordering[T8] , ord9 : Ordering[T9] ) : Ordering[(T1, T2, T3, T4, T5, T6, T7, T8, T9)]

    attributes: implicit
  30. object Unit extends UnitOrdering

    attributes: implicit
  31. def apply [T] (implicit ord : Ordering[T] ) : Ordering[T]

  32. def asInstanceOf [T0] : T0

    This method is used to cast the receiver object to be of type T0.

    This method is used to cast the receiver object to be of type T0.

    Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expression List(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested typed.

    returns

    the receiver object.

    attributes: final
    definition classes: Any
  33. def by [T, S] ( f : (T) ⇒ S )(implicit ord : Ordering[S] ) : Ordering[T]

  34. def clone () : AnyRef

    This method creates and returns a copy of the receiver object.

    This method creates and returns a copy of the receiver object.

    The default implementation of the clone method is platform dependent.

    returns

    a copy of the receiver object.

    attributes: protected[lang]
    definition classes: AnyRef
    annotations: @throws()
  35. implicit def comparatorToOrdering [A] (implicit cmp : Comparator[A] ) : Ordering[A]

    attributes: implicit
    definition classes: LowPriorityOrderingImplicits
  36. def eq ( arg0 : AnyRef ) : Boolean

    This method is used to test whether the argument (arg0) is a reference to the receiver object (this).

    This method is used to test whether the argument (arg0) is a reference to the receiver object (this).

    The eq method implements an [http://en.wikipedia.org/wiki/Equivalence_relation equivalence relation] on non-null instances of AnyRef: * It is reflexive: for any non-null instance x of type AnyRef, x.eq(x) returns true. * It is symmetric: for any non-null instances x and y of type AnyRef, x.eq(y) returns true if and only if y.eq(x) returns true. * It is transitive: for any non-null instances x, y, and z of type AnyRef if x.eq(y) returns true and y.eq(z) returns true, then x.eq(z) returns true.

    Additionally, the eq method has three other properties. * It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false. * For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false. * null.eq(null) returns true.

    When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).

    arg0

    the object to compare against this object for reference equality.

    returns

    true if the argument is a reference to the receiver object; false otherwise.

    attributes: final
    definition classes: AnyRef
  37. def equals ( arg0 : Any ) : Boolean

    This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence.

    This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence.

    The default implementations of this method is an [http://en.wikipedia.org/wiki/Equivalence_relation equivalence relation]: * It is reflexive: for any instance x of type Any, x.equals(x) should return true. * It is symmetric: for any instances x and y of type Any, x.equals(y) should return true if and only if y.equals(x) returns true. * It is transitive: for any instances x, y, and z of type AnyRef if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.

    If you override this method, you should verify that your implementation remains an equivalence relation. Additionally, when overriding this method it is often necessary to override hashCode to ensure that objects that are "equal" (o1.equals(o2) returns true) hash to the same Int (o1.hashCode.equals(o2.hashCode)).

    arg0

    the object to compare against this object for equality.

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    definition classes: AnyRef → Any
  38. def finalize () : Unit

    This method is called by the garbage collector on the receiver object when garbage collection determines that there are no more references to the object.

    This method is called by the garbage collector on the receiver object when garbage collection determines that there are no more references to the object.

    The details of when and if the finalize method are invoked, as well as the interaction between finalize and non-local returns and exceptions, are all platform dependent.

    attributes: protected[lang]
    definition classes: AnyRef
    annotations: @throws()
  39. def fromLessThan [T] ( cmp : (T, T) ⇒ Boolean ) : Ordering[T]

  40. def getClass () : java.lang.Class[_ <: java.lang.Object]

    Returns a representation that corresponds to the dynamic class of the receiver object.

    Returns a representation that corresponds to the dynamic class of the receiver object.

    The nature of the representation is platform dependent.

    returns

    a representation that corresponds to the dynamic class of the receiver object.

    attributes: final
    definition classes: AnyRef
  41. def hashCode () : Int

    Returns a hash code value for the object.

    Returns a hash code value for the object.

    The default hashing algorithm is platform dependent.

    Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet not be equal (o1.equals(o2) returns false). A degenerate implementation could always return 0. However, it is required that if two objects are equal (o1.equals(o2) returns true) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the equals method.

    returns

    the hash code value for the object.

    definition classes: AnyRef → Any
  42. def isInstanceOf [T0] : Boolean

    This method is used to test whether the dynamic type of the receiver object is T0.

    This method is used to test whether the dynamic type of the receiver object is T0.

    Note that the test result of the test is modulo Scala's erasure semantics. Therefore the expression 1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested typed.

    returns

    true if the receiver object is an instance of erasure of type T0; false otherwise.

    attributes: final
    definition classes: Any
  43. def ne ( arg0 : AnyRef ) : Boolean

    o.ne(arg0) is the same as !(o.eq(arg0)).

    o.ne(arg0) is the same as !(o.eq(arg0)).

    arg0

    the object to compare against this object for reference dis-equality.

    returns

    false if the argument is not a reference to the receiver object; true otherwise.

    attributes: final
    definition classes: AnyRef
  44. def notify () : Unit

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Wakes up a single thread that is waiting on the receiver object's monitor.

    attributes: final
    definition classes: AnyRef
  45. def notifyAll () : Unit

    Wakes up all threads that are waiting on the receiver object's monitor.

    Wakes up all threads that are waiting on the receiver object's monitor.

    attributes: final
    definition classes: AnyRef
  46. implicit def ordered [A] (implicit arg0 : (A) ⇒ Comparable[A] ) : Ordering[A]

    This would conflict with all the nice implicit Orderings available, but thanks to the magic of prioritized implicits via subclassing we can make Ordered[A] => Ordering[A] only turn up if nothing else works.

    This would conflict with all the nice implicit Orderings available, but thanks to the magic of prioritized implicits via subclassing we can make Ordered[A] => Ordering[A] only turn up if nothing else works. Since Ordered[A] extends Comparable[A] anyway, we can throw in some java interop too.

    attributes: implicit
    definition classes: LowPriorityOrderingImplicits
  47. def readResolve () : AnyRef

    attributes: protected
  48. def synchronized [T0] ( arg0 : ⇒ T0 ) : T0

    attributes: final
    definition classes: AnyRef
  49. def toString () : String

    Returns a string representation of the object.

    Returns a string representation of the object.

    The default representation is platform dependent.

    returns

    a string representation of the object.

    definition classes: AnyRef → Any
  50. def wait () : Unit

    attributes: final
    definition classes: AnyRef
    annotations: @throws()
  51. def wait ( arg0 : Long , arg1 : Int ) : Unit

    attributes: final
    definition classes: AnyRef
    annotations: @throws()
  52. def wait ( arg0 : Long ) : Unit

    attributes: final
    definition classes: AnyRef
    annotations: @throws()

Inherited from Serializable

Inherited from Serializable

Inherited from LowPriorityOrderingImplicits

Inherited from AnyRef

Inherited from Any