scala.runtime

ScalaRunTime

object ScalaRunTime

The object ScalaRunTime provides support methods required by the scala runtime. All these methods should be considered outside the API and subject to change or removal without notice.

Source
ScalaRunTime.scala
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  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  2. final def !=(arg0: Any): Boolean

    Test two objects for inequality.

    Test two objects for inequality.

    returns

    true if !(this == that), false otherwise.

    Definition Classes
    Any
  3. final def ##(): Int

    Equivalent to x.hashCode except for boxed numeric types and null.

    Equivalent to x.hashCode except for boxed numeric types and null. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For null returns a hashcode where null.hashCode throws a NullPointerException.

    returns

    a hash value consistent with ==

    Definition Classes
    AnyRef → Any
  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  5. final def ==(arg0: Any): Boolean

    Test two objects for equality.

    Test two objects for equality. The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    returns

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

    Definition Classes
    Any
  6. def _equals(x: Product, y: Any): Boolean

  7. def _hashCode(x: Product): Int

  8. def _toString(x: Product): String

  9. def anyValClass[T <: AnyVal](value: T)(implicit arg0: ClassTag[T]): Class[T]

    Return the class object representing an unboxed value type, e.

    Return the class object representing an unboxed value type, e.g. classOf[int], not classOf[java.lang.Integer]. The compiler rewrites expressions like 5.getClass to come here.

  10. def arrayClass(clazz: Class[_]): Class[_]

    Return the class object representing an array with element class clazz.

  11. def arrayElementClass(schematic: Any): Class[_]

    Return the class object representing elements in arrays described by a given schematic.

  12. def array_apply(xs: AnyRef, idx: Int): Any

    Retrieve generic array element

  13. def array_clone(xs: AnyRef): AnyRef

  14. def array_length(xs: AnyRef): Int

    Get generic array length

  15. def array_update(xs: AnyRef, idx: Int, value: Any): Unit

    update generic array element

  16. final def asInstanceOf[T0]: T0

    Cast the receiver object to be of type T0.

    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 type.

    returns

    the receiver object.

    Definition Classes
    Any
    Exceptions thrown
    ClassCastException

    if the receiver object is not an instance of the erasure of type T0.

  17. def checkInitialized[T <: AnyRef](x: T): T

  18. def clone(): AnyRef

    Create a copy of the receiver object.

    Create 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[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
    Note

    not specified by SLS as a member of AnyRef

  19. def ensureAccessible(m: Method): Method

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

    Tests whether the argument (arg0) is a reference to the receiver object (this).

    Tests whether the argument (arg0) is a reference to the receiver object (this).

    The eq method implements an equivalence relation on non-null instances of AnyRef, and has three additional 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).

    returns

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

    Definition Classes
    AnyRef
  21. def equals(arg0: Any): Boolean

    The equality method for reference types.

    The equality method for reference types. Default implementation delegates to eq.

    See also equals in scala.Any.

    returns

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

    Definition Classes
    AnyRef → Any
  22. def finalize(): Unit

    Called by the garbage collector on the receiver object when there are no more references to the object.

    Called by the garbage collector on the receiver object when there are no more references to the object.

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

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
    Note

    not specified by SLS as a member of AnyRef

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

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

    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.

    Definition Classes
    AnyRef → Any
    Note

    not specified by SLS as a member of AnyRef

  24. def hash(x: Unit): Int

  25. def hash(x: Boolean): Int

  26. def hash(x: Char): Int

  27. def hash(x: Byte): Int

  28. def hash(x: Short): Int

  29. def hash(x: Int): Int

  30. def hash(x: Number): Int

  31. def hash(lv: Long): Int

  32. def hash(fv: Float): Int

  33. def hash(dv: Double): Int

  34. def hash(x: Any): Int

  35. def hashCode(): Int

    The hashCode method for reference types.

    The hashCode method for reference types. See hashCode in scala.Any.

    returns

    the hash code value for this object.

    Definition Classes
    AnyRef → Any
  36. def inlinedEquals(x: AnyRef, y: AnyRef): Boolean

    Fast path equality method for inlining; used when -optimise is set.

    Fast path equality method for inlining; used when -optimise is set.

    Annotations
    @inline()
  37. def isAnyVal(x: Any): Boolean

  38. def isArray(x: Any, atLevel: Int): Boolean

  39. def isArray(x: AnyRef): Boolean

  40. final def isInstanceOf[T0]: Boolean

    Test whether the dynamic type of the receiver object is T0.

    Test whether the dynamic type of the receiver object is T0.

    Note that the 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 specified type.

    returns

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

    Definition Classes
    Any
  41. def isTuple(x: Any): Boolean

  42. def isValueClass(clazz: Class[_]): Boolean

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

    Equivalent to !(this eq that).

    Equivalent to !(this eq that).

    returns

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

    Definition Classes
    AnyRef
  44. final 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.

    Definition Classes
    AnyRef
    Note

    not specified by SLS as a member of AnyRef

  45. final 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.

    Definition Classes
    AnyRef
    Note

    not specified by SLS as a member of AnyRef

  46. def replStringOf(arg: Any, maxElements: Int): String

    stringOf formatted for use in a repl result.

  47. def sameElements(xs1: collection.Seq[Any], xs2: collection.Seq[Any]): Boolean

    A helper method for constructing case class equality methods, because existential types get in the way of a clean outcome and it's performing a series of Any/Any equals comparisons anyway.

    A helper method for constructing case class equality methods, because existential types get in the way of a clean outcome and it's performing a series of Any/Any equals comparisons anyway. See ticket #2867 for specifics.

  48. def stringOf(arg: Any, maxElements: Int): String

  49. def stringOf(arg: Any): String

    Given any Scala value, convert it to a String.

    Given any Scala value, convert it to a String.

    The primary motivation for this method is to provide a means for correctly obtaining a String representation of a value, while avoiding the pitfalls of naïvely calling toString on said value. In particular, it addresses the fact that (a) toString cannot be called on null and (b) depending on the apparent type of an array, toString may or may not print it in a human-readable form.

    arg

    the value to stringify

    returns

    a string representation of arg.

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

    Definition Classes
    AnyRef
  51. def toArray[T](xs: collection.Seq[T]): Array[AnyRef]

  52. def toObjectArray(src: AnyRef): Array[AnyRef]

    Convert an array to an object array.

    Convert an array to an object array. Needed to deal with vararg arguments of primitive types that are passed to a generic Java vararg parameter T ...

  53. def toString(): String

    Creates a String representation of this object.

    Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.

    returns

    a String representation of the object.

    Definition Classes
    AnyRef → Any
  54. def typedProductIterator[T](x: Product): Iterator[T]

    A helper for case classes.

  55. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  56. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  57. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from AnyRef

Inherited from Any

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