Any

scala.Any

abstract open class Any

Class Any is the root of the Scala class hierarchy. Every class in a Scala execution environment inherits directly or indirectly from this class.

Starting with Scala 2.10 it is possible to directly extend Any using universal traits. A universal trait is a trait that extends Any, only has defs as members, and does no initialization.

The main use case for universal traits is to allow basic inheritance of methods for value classes. For example,

trait Printable extends Any {
  def print(): Unit = println(this)
}
class Wrapper(val underlying: Int) extends AnyVal with Printable

val w = new Wrapper(3)
w.print()

See the Value Classes and Universal Traits for more details on the interplay of universal traits and value classes.

Attributes

Graph
Known subtypes: trait LinearSeqOps[A, CC, C]

class LazyList[A]

trait LinearSeq[A]

class List[A]

class ::[A]

object Nil

class Queue[A]

class Stream[A]

class Cons[A]

object Empty

trait SeqOps[A, CC, C]

trait IndexedSeqOps[A, CC, C]

class ArraySeq[A]

class ofBoolean

class ofByte

class ofChar

class ofDouble

class ofFloat

class ofInt

class ofLong

class ofRef[T]

class ofShort

class ofUnit

trait IndexedSeq[A]

class NumericRange[T]

class Exclusive[T]

class Inclusive[T]

class Range

class Exclusive

class Inclusive

class Vector[A]

class WrappedString

trait Seq[A]

class AbstractSeq[A]

trait StrictOptimizedSeqOps[A, CC, C]

trait BuildFrom[From, A, C]

trait Factory[A, C]

trait SpecificIterableFactory[A, C]

object BitSet

object WrappedString

object BitSet

object BitSet

object DoubleAccumulator

object IntAccumulator

object LongAccumulator

object ValueSet

trait IndexedSeqOps[A, CC, C]

trait IndexedSeqOps[A, CC, C]

class ArrayBuffer[A]

class ArrayDeque[A]

class Queue[A]

class Stack[A]

class ArraySeq[T]

class ofBoolean

class ofByte

class ofChar

class ofDouble

class ofFloat

class ofInt

class ofLong

class ofRef[T]

class ofShort

class ofUnit

trait IndexedBuffer[A]

trait IndexedSeq[T]

class StringBuilder

trait IndexedSeq[A]

trait IndexedSeqView[A]

class AbstractIndexedSeqView[A]

class ArrayBufferView[A]

class Slice[A]

class StringView

class Appended[A]

class Concat[A]

class Drop[A]

class DropRight[A]

class Id[A]

class Map[A, B]

class Prepended[A]

class Reverse[A]

class Take[A]

class TakeRight[A]

trait IterableOnce[A]

trait Iterable[A]

trait Iterable[A]

trait Map[K, V]

class AbstractMap[K, V]

class HashMap[K, V]

class IntMap[T]

class ListMap[K, V]

class LongMap[T]

class Map1[K, V]

class Map2[K, V]

class Map3[K, V]

class Map4[K, V]

class WithDefault[K, V]

class WithDefault[K, V]

class TreeMap[K, V]

class TreeSeqMap[K, V]

class VectorMap[K, V]

trait SeqMap[K, V]

trait SortedMap[K, V]

trait Set[A]

class AbstractSet[A]

class BitSet

class BitSet1

class BitSet2

class BitSetN

class HashSet[A]

class ListSet[A]

class Set1[A]

class Set2[A]

class Set3[A]

class Set4[A]

class ImmutableKeySortedSet

class TreeSet[A]

class ValueSet

trait SortedSet[A]

trait Iterable[A]

class AbstractIterable[A]

class PriorityQueue[A]

trait Map[K, V]

trait Map[K, V]

class TrieMap[K, V]

class AbstractMap[K, V]

class AnyRefMap[K, V]

class CollisionProofHashMap[K, V]

class HashMap[K, V]

class LinkedHashMap[K, V]

class ListMap[K, V]

class LongMap[V]

class WithDefault[K, V]

class WithDefault[K, V]

class OpenHashMap[Key, Value]

class TreeMap[K, V]

class SystemProperties

trait MultiMap[K, V]

trait SeqMap[K, V]

trait SortedMap[K, V]

trait Seq[A]

class AbstractSeq[A]

class AbstractBuffer[A]

class ListBuffer[A]

class UnrolledBuffer[T]

trait Buffer[A]

class Accumulator[A, CC, C]

class AnyAccumulator[A]

class DoubleAccumulator

class IntAccumulator

class LongAccumulator

trait Set[A]

class AbstractSet[A]

class BitSet

class HashSet[A]

class LinkedHashSet[A]

class TreeSet[A]

trait SortedSet[A]

class AbstractIterable[A]

class AbstractMap[K, V]

class AbstractSeq[A]

class AbstractSet[A]

class AbstractView[A]

class AbstractMapView[K, V]

class Filter[K, V]

class FilterKeys[K, V]

class Id[K, V]

class MapValues[K, V, W]

class TapEach[K, V, U]

class AbstractSeqView[A]

class Id[A]

class Reverse[A]

class Appended[A]

class Appended[A]

class Collect[A, B]

class Concat[A]

class Concat[A]

class DistinctBy[A, B]

class Drop[A]

class Drop[A]

class DropRight[A]

class DropRight[A]

class DropWhile[A]

class Elems[A]

object Empty

class Fill[A]

class Filter[A]

class FlatMap[A, B]

class Iterate[A]

class LeftPartitionMapped[A, A1, A2]

class Map[A, B]

class Map[A, B]

class PadTo[A]

class Prepended[A]

class Prepended[A]

class RightPartitionMapped[A, A1, A2]

class ScanLeft[A, B]

class Single[A]

class Tabulate[A]

class Take[A]

class Take[A]

class TakeRight[A]

class TakeRight[A]

class TakeWhile[A]

class Unfold[A, S]

class Updated[A]

class Zip[A, B]

class ZipAll[A, B]

class ZipWithIndex[A]

trait Map[K, V]

trait DefaultMap[K, V]

trait SeqMap[K, V]

trait SortedMap[K, V]

trait Seq[A]

trait LinearSeq[A]

trait Set[A]

trait SortedSet[A]

trait BitSet

trait View[A]

trait MapView[K, V]

trait SeqView[A]

class Sorted[A, B]

trait IterableOps[A, CC, C]

trait MapOps[K, V, CC, C]

trait SortedMapOps[K, V, CC, C]

trait StrictOptimizedSortedMapOps[K, V, CC, C]

trait StrictOptimizedMapOps[K, V, CC, C]

trait MapOps[K, V, CC, C]

trait SortedMapOps[K, V, CC, C]

trait SetOps[A, CC, C]

trait SortedSetOps[A, CC, C]

trait EvidenceIterableFactoryDefaults[A, CC, Ev]

trait IterableFactoryDefaults[A, CC]

trait MapFactoryDefaults[K, V, CC, WithFilterCC]

class WeakHashMap[K, V]

trait MapOps[K, V, CC, C]

trait SortedMapFactoryDefaults[K, V, CC, WithFilterCC, UnsortedCC]

trait SortedMapOps[K, V, CC, C]

trait StrictOptimizedSortedMapOps[K, V, CC, C]

trait StrictOptimizedMapOps[K, V, CC, C]

trait SeqOps[A, CC, C]

trait SeqOps[A, CC, C]

trait LinearSeqOps[A, CC, C]

trait StrictOptimizedLinearSeqOps[A, CC, C]

trait StrictOptimizedSeqOps[A, CC, C]

trait ArrayDequeOps[A, CC, C]

trait SetOps[A, CC, C]

trait SetOps[A, CC, C]

trait SortedSetOps[A, CC, C]

trait StrictOptimizedSortedSetOps[A, CC, C]

trait StrictOptimizedSetOps[A, CC, C]

trait SortedSetOps[A, CC, C]

trait BitSetOps[C]

trait SortedSetFactoryDefaults[A, CC, WithFilterCC]

trait StrictOptimizedSortedSetOps[A, CC, C]

trait StrictOptimizedSetOps[A, CC, C]

trait StrictOptimizedIterableOps[A, CC, C]

trait Iterator[A]

class AbstractIterator[A]

class GroupedIterator[B]

class BufferedLineIterator

class LineIterator

class MatchIterator

trait BufferedIterator[A]

class Source

class BufferedSource

class Option[A]

object None

class Some[A]

trait IterableOnceOps[A, CC, C]

trait DurationConversions

class DurationDouble

class DurationInt

class DurationLong

trait Equiv[T]

object BigDecimal

object BigInt

object Boolean

object Byte

object Char

trait IeeeEquiv

object IeeeEquiv

trait StrictEquiv

object DeprecatedDoubleEquiv

object StrictEquiv

trait IeeeEquiv

object IeeeEquiv

trait StrictEquiv

object DeprecatedFloatEquiv

object StrictEquiv

object Int

object Long

object Short

object String

object Symbol

object Unit

trait PartialOrdering[T]

trait Ordering[T]

object DeadlineIsOrdered

object DurationIsOrdered

object FiniteDurationIsOrdered

object ValueOrdering

trait Numeric[T]

trait Fractional[T]

trait BigDecimalIsFractional

object BigDecimalIsFractional

trait DoubleIsFractional

object DoubleIsFractional

trait FloatIsFractional

object FloatIsFractional

trait Integral[T]

trait BigDecimalAsIfIntegral

object BigDecimalAsIfIntegral

trait BigIntIsIntegral

object BigIntIsIntegral

trait ByteIsIntegral

object ByteIsIntegral

trait CharIsIntegral

object CharIsIntegral

trait IntIsIntegral

object IntIsIntegral

trait LongIsIntegral

object LongIsIntegral

trait ShortIsIntegral

object ShortIsIntegral

trait BigDecimalIsConflicted

trait BigDecimalOrdering

object BigDecimal

trait BigIntOrdering

object BigInt

trait BooleanOrdering

object Boolean

trait ByteOrdering

object Byte

trait CachedReverse[T]

object Int

trait CharOrdering

object Char

trait IeeeOrdering

object IeeeOrdering

trait TotalOrdering

object DeprecatedDoubleOrdering

object TotalOrdering

trait IeeeOrdering

object IeeeOrdering

trait TotalOrdering

object DeprecatedFloatOrdering

object TotalOrdering

trait IntOrdering

trait LongOrdering

object Long

trait OptionOrdering[T]

trait ShortOrdering

object Short

trait StringOrdering

object String

trait SymbolOrdering

object Symbol

trait UnitOrdering

object Unit

trait Ordered[A]

class Deadline

class Duration

class Infinite

class FiniteDuration

class BigDecimal

class Value

class Val

class BigInt

trait OrderedProxy[T]

class RichBoolean

trait ScalaNumberProxy[T]

trait FractionalProxy[T]

class RichDouble

class RichFloat

class RichInt

trait ScalaWholeNumberProxy[T]

trait IntegralProxy[T]

class RichChar

class RichLong

class RichByte

class RichShort

trait PartiallyOrdered[A]

trait ScalaNumericAnyConversions

trait ScalaNumericConversions

trait Enum

trait RangedProxy[T]

trait ZippedIterable2[El1, El2]

class Tuple2Zipped[El1, It1, El2, It2]

trait ZippedIterable3[El1, El2, El3]

class Tuple3Zipped[El1, It1, El2, It2, El3, It3]

trait Dynamic

trait Equals

class AnyValManifest[T]

trait ClassTag[T]

trait Manifest[T]

trait Product

trait EnumValue

class TupleXXL

class Either[A, B]

class Left[A, B]

class Right[A, B]

class Try[T]

class Failure[T]

class Success[T]

trait Product1[T1]

class Tuple1[T1]

trait Product10[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)

trait Product11[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11)

trait Product12[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)

trait Product13[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13)

trait Product14[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14)

trait Product15[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15)

trait Product16[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16)

trait Product17[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17)

trait Product18[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18)

trait Product19[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19)

trait Product2[T1, T2]

class (T1, T2)

trait Product20[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20)

trait Product21[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21)

trait Product22[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22)

trait Product3[T1, T2, T3]

class (T1, T2, T3)

trait Product4[T1, T2, T3, T4]

class (T1, T2, T3, T4)

trait Product5[T1, T2, T3, T4, T5]

class (T1, T2, T3, T4, T5)

trait Product6[T1, T2, T3, T4, T5, T6]

class (T1, T2, T3, T4, T5, T6)

trait Product7[T1, T2, T3, T4, T5, T6, T7]

class (T1, T2, T3, T4, T5, T6, T7)

trait Product8[T1, T2, T3, T4, T5, T6, T7, T8]

class (T1, T2, T3, T4, T5, T6, T7, T8)

trait Product9[T1, T2, T3, T4, T5, T6, T7, T8, T9]

class (T1, T2, T3, T4, T5, T6, T7, T8, T9)

trait Tuple

object EmptyTuple

trait NonEmptyTuple

class H *: T

trait Proxy

trait ReferenceWrapper[T]

class PhantomReference[T]

class SoftReference[T]

class WeakReference[T]

trait Typed[T]

trait Selectable

trait Selectable

trait WithoutPreciseParameterTypes
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Members list

Value members

Concrete methods

Test two objects for inequality.

Value parameters

that: the object to compare against this object for equality.

Attributes

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

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.

Attributes

Returns: a hash value consistent with ==

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).

Value parameters

that: the object to compare against this object for equality.

Attributes

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

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.

Attributes

Returns: the receiver object.
Throws: ClassCastException if the receiver object is not an instance of the erasure of type T0.

Compares the receiver object (this) with the argument object (that) for equivalence.

Any implementation of this method should be an 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 Any 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 usually necessary to override hashCode to ensure that objects which are "equal" (o1.equals(o2) returns true) hash to the same scala.Int. (o1.hashCode.equals(o2.hashCode)).

Value parameters

that: the object to compare against this object for equality.

Attributes

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

Returns the runtime class representation of the object.

Attributes

Returns: a class object corresponding to the runtime type of the receiver.

Calculates 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.

Attributes

Returns: the hash code value for this object.

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.

Attributes

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

Returns a string representation of the object.

The default representation is platform dependent.

Attributes

Returns: a string representation of the object.

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