scala.Predef

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Type Members

class <:< [-From, +To] extends (From) ⇒ To with Serializable

An instance of A <:< B witnesses that A is a subtype of B.
class =:= [From, To] extends (From) ⇒ To with Serializable

An instance of A =:= B witnesses that the types A and B are equal.
class ArrowAssoc [A] extends AnyRef

Attributes
final
type Class [T] = Class[T]
type ClassManifest [T] = ClassManifest[T]
class DummyImplicit extends AnyRef

A type for which there is always an implicit value.
class Ensuring [A] extends AnyRef

Attributes
final
type Function [-A, +B] = (A) ⇒ B
type Manifest [T] = Manifest[T]
type Map [A, +B] = Map[A, B]
type OptManifest [T] = OptManifest[T]
type Pair [+A, +B] = (A, B)
type Set [A] = Set[A]
type String = String
type Triple [+A, +B, +C] = (A, B, C)
class <%< [-From, +To] extends (From) ⇒ To with Serializable

Attributes
sealed abstract
Annotations
@deprecated
Deprecated
Use From => To instead

Value Members

def != (arg0: AnyRef): Boolean

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

Test two objects for inequality.
Test two objects for inequality.
returns
true if !(this == that), false otherwise.

Attributes
final
Definition Classes
Any
def ## (): Int

Equivalent to x.hashCode except for boxed numeric types.
Equivalent to x.hashCode except for boxed numeric types. 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.
returns
a hash value consistent with ==

Attributes
final
Definition Classes
AnyRef → Any
val $scope : xml.TopScope.type
object <%< extends Serializable
object =:= extends Serializable
def == (arg0: AnyRef): Boolean

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

Test two objects for equality.
Test two objects for equality.
returns
true if the receiver object is equivalent to the argument; false otherwise.

Attributes
final
Definition Classes
Any
val AnyRef : SpecializableCompanion
implicit def Boolean2boolean (x: Boolean): Boolean

Attributes
implicit
implicit def Boolean2booleanNullConflict (x: Null): Boolean

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def Byte2byte (x: Byte): Byte

Attributes
implicit
implicit def Byte2byteNullConflict (x: Null): Byte

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def Character2char (x: Character): Char

Attributes
implicit
implicit def Character2charNullConflict (x: Null): Char

Attributes
implicit
Definition Classes
LowPriorityImplicits
val ClassManifest : reflect.ClassManifest.type
implicit def Double2double (x: Double): Double

Attributes
implicit
implicit def Double2doubleNullConflict (x: Null): Double

Attributes
implicit
Definition Classes
LowPriorityImplicits
object DummyImplicit extends AnyRef
implicit def Float2float (x: Float): Float

Attributes
implicit
implicit def Float2floatNullConflict (x: Null): Float

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def Integer2int (x: Integer): Int

Attributes
implicit
implicit def Integer2intNullConflict (x: Null): Int

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def Long2long (x: Long): Long

Attributes
implicit
implicit def Long2longNullConflict (x: Null): Long

Attributes
implicit
Definition Classes
LowPriorityImplicits
val Manifest : reflect.Manifest.type
val Map : scala.collection.immutable.Map.type
val NoManifest : reflect.NoManifest.type
object Pair extends Serializable
val Set : scala.collection.immutable.Set.type
implicit def Short2short (x: Short): Short

Attributes
implicit
implicit def Short2shortNullConflict (x: Null): Short

Attributes
implicit
Definition Classes
LowPriorityImplicits
object Triple extends Serializable
implicit def any2ArrowAssoc [A] (x: A): ArrowAssoc[A]

Attributes
implicit
implicit def any2Ensuring [A] (x: A): Ensuring[A]

Attributes
implicit
implicit def any2stringadd (x: Any): StringAdd

Attributes
implicit
implicit def arrayToCharSequence (xs: Array[Char]): CharSequence

Attributes
implicit
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.

Attributes
final
Definition Classes
Any
def assert (assertion: Boolean, message: ⇒ Any): Unit

Tests an expression, throwing an AssertionError if false.
Tests an expression, throwing an AssertionError if false. Calls to this method will not be generated if -Xelide-below is at least ASSERTION.

Attributes
final
Annotations
@elidable( level = ASSERTION ) @inline()
See also
elidable
def assert (assertion: Boolean): Unit

Tests an expression, throwing an AssertionError if false.
Tests an expression, throwing an AssertionError if false. Calls to this method will not be generated if -Xelide-below is at least ASSERTION.

Annotations
@elidable( level = ASSERTION )
See also
elidable
def assume (assumption: Boolean, message: ⇒ Any): Unit

Tests an expression, throwing an AssertionError if false.
Tests an expression, throwing an AssertionError if false. This method differs from assert only in the intent expressed: assert contains a predicate which needs to be proven, while assume contains an axiom for a static checker. Calls to this method will not be generated if -Xelide-below is at least ASSERTION.

Attributes
final
Annotations
@elidable( level = ASSERTION ) @inline()
See also
elidable
def assume (assumption: Boolean): Unit

Tests an expression, throwing an AssertionError if false.
Tests an expression, throwing an AssertionError if false. This method differs from assert only in the intent expressed: assert contains a predicate which needs to be proven, while assume contains an axiom for a static checker. Calls to this method will not be generated if -Xelide-below is at least ASSERTION.

Annotations
@elidable( level = ASSERTION )
See also
elidable
implicit def augmentString (x: String): StringOps

Attributes
implicit
implicit def boolean2Boolean (x: Boolean): Boolean

Attributes
implicit
implicit def boolean2BooleanConflict (x: Boolean): AnyRef

Attributes
implicit
implicit def booleanArrayOps (xs: Array[Boolean]): ArrayOps[Boolean]

Attributes
implicit
implicit def booleanWrapper (x: Boolean): RichBoolean

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def byte2Byte (x: Byte): Byte

Attributes
implicit
implicit def byte2ByteConflict (x: Byte): AnyRef

Attributes
implicit
implicit def byte2double (x: Byte): Double

Attributes
implicit
implicit def byte2float (x: Byte): Float

Attributes
implicit
implicit def byte2int (x: Byte): Int

Attributes
implicit
implicit def byte2long (x: Byte): Long

Attributes
implicit
implicit def byte2short (x: Byte): Short

Attributes
implicit
implicit def byteArrayOps (xs: Array[Byte]): ArrayOps[Byte]

Attributes
implicit
implicit def byteWrapper (x: Byte): RichByte

We prefer the java.
We prefer the java.lang.* boxed types to these wrappers in any potential conflicts. Conflicts do exist because the wrappers need to implement ScalaNumber in order to have a symmetric equals method, but that implies implementing java.lang.Number as well.

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def char2Character (x: Char): Character

Attributes
implicit
implicit def char2CharacterConflict (x: Char): AnyRef

Attributes
implicit
implicit def char2double (x: Char): Double

Attributes
implicit
implicit def char2float (x: Char): Float

Attributes
implicit
implicit def char2int (x: Char): Int

Attributes
implicit
implicit def char2long (x: Char): Long

Attributes
implicit
implicit def charArrayOps (xs: Array[Char]): ArrayOps[Char]

Attributes
implicit
implicit def charWrapper (c: Char): RichChar

Attributes
implicit
Definition Classes
LowPriorityImplicits
def classManifest [T] (implicit m: ClassManifest[T]): ClassManifest[T]
def classOf [T] : Class[T]

Return the runtime representation of a class type.
Return the runtime representation of a class type. This is a stub method. The actual implementation is filled in by the compiler.
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[lang]
Definition Classes
AnyRef
Annotations
@throws()
implicit def conforms [A] : <:<[A, A]

Attributes
implicit
implicit def double2Double (x: Double): Double

Attributes
implicit
implicit def double2DoubleConflict (x: Double): AnyRef

Attributes
implicit
implicit def doubleArrayOps (xs: Array[Double]): ArrayOps[Double]

Attributes
implicit
implicit def doubleWrapper (x: Double): RichDouble

Attributes
implicit
Definition Classes
LowPriorityImplicits
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.

Attributes
final
Definition Classes
AnyRef
def equals (arg0: Any): Boolean

The equality method for reference types.
The equality method for reference types. See equals in Any.
returns
true if the receiver object is equivalent to the argument; false otherwise.

Definition Classes
AnyRef → Any
implicit def exceptionWrapper (exc: Throwable): RichException

Attributes
implicit
implicit def fallbackStringCanBuildFrom [T] : CanBuildFrom[String, T, IndexedSeq[T]]

Attributes
implicit
Definition Classes
LowPriorityImplicits
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[lang]
Definition Classes
AnyRef
Annotations
@throws()
implicit def float2Float (x: Float): Float

Attributes
implicit
implicit def float2FloatConflict (x: Float): AnyRef

Attributes
implicit
implicit def float2double (x: Float): Double

Attributes
implicit
implicit def floatArrayOps (xs: Array[Float]): ArrayOps[Float]

Attributes
implicit
implicit def floatWrapper (x: Float): RichFloat

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def genericArrayOps [T] (xs: Array[T]): ArrayOps[T]

Attributes
implicit
implicit def genericWrapArray [T] (xs: Array[T]): WrappedArray[T]

Attributes
implicit
Definition Classes
LowPriorityImplicits
def getClass (): java.lang.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.

Attributes
final
Definition Classes
AnyRef → Any
def hashCode (): Int

The hashCode method for reference types.
The hashCode method for reference types. See hashCode in Any.
returns
the hash code value for this object.

Definition Classes
AnyRef → Any
def identity [A] (x: A): A
def implicitly [T] (implicit e: T): T
implicit def int2Integer (x: Int): Integer

Attributes
implicit
implicit def int2IntegerConflict (x: Int): AnyRef

Attributes
implicit
implicit def int2double (x: Int): Double

Attributes
implicit
implicit def int2float (x: Int): Float

Attributes
implicit
implicit def int2long (x: Int): Long

Attributes
implicit
implicit def intArrayOps (xs: Array[Int]): ArrayOps[Int]

Attributes
implicit
implicit def intWrapper (x: Int): RichInt

Attributes
implicit
Definition Classes
LowPriorityImplicits
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.

Attributes
final
Definition Classes
Any
def locally [T] (x: T): T

Annotations
@inline()
implicit def long2Long (x: Long): Long

Attributes
implicit
implicit def long2LongConflict (x: Long): AnyRef

Attributes
implicit
implicit def long2double (x: Long): Double

Attributes
implicit
implicit def long2float (x: Long): Float

Attributes
implicit
implicit def longArrayOps (xs: Array[Long]): ArrayOps[Long]

Attributes
implicit
implicit def longWrapper (x: Long): RichLong

Attributes
implicit
Definition Classes
LowPriorityImplicits
def manifest [T] (implicit m: Manifest[T]): Manifest[T]
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.

Attributes
final
Definition Classes
AnyRef
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
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
def optManifest [T] (implicit m: OptManifest[T]): OptManifest[T]
def print (x: Any): Unit
def printf (text: String, xs: Any*): Unit
def println (x: Any): Unit
def println (): Unit
def readBoolean (): Boolean
def readByte (): Byte
def readChar (): Char
def readDouble (): Double
def readFloat (): Float
def readInt (): Int
def readLine (text: String, args: Any*): String
def readLine (): String
def readLong (): Long
def readShort (): Short
def readf (format: String): List[Any]
def readf1 (format: String): Any
def readf2 (format: String): (Any, Any)
def readf3 (format: String): (Any, Any, Any)
implicit def refArrayOps [T <: AnyRef] (xs: Array[T]): ArrayOps[T]

Attributes
implicit
def require (requirement: Boolean, message: ⇒ Any): Unit

Tests an expression, throwing an IllegalArgumentException if false.
Tests an expression, throwing an IllegalArgumentException if false. This method is similar to assert, but blames the caller of the method for violating the condition.

Attributes
final
Annotations
@inline()
def require (requirement: Boolean): Unit

Tests an expression, throwing an IllegalArgumentException if false.
Tests an expression, throwing an IllegalArgumentException if false. This method is similar to assert, but blames the caller of the method for violating the condition.
implicit def seqToCharSequence (xs: IndexedSeq[Char]): CharSequence

Attributes
implicit
implicit def short2Short (x: Short): Short

Attributes
implicit
implicit def short2ShortConflict (x: Short): AnyRef

Attributes
implicit
implicit def short2double (x: Short): Double

Attributes
implicit
implicit def short2float (x: Short): Float

Attributes
implicit
implicit def short2int (x: Short): Int

Attributes
implicit
implicit def short2long (x: Short): Long

Attributes
implicit
implicit def shortArrayOps (xs: Array[Short]): ArrayOps[Short]

Attributes
implicit
implicit def shortWrapper (x: Short): RichShort

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def stringCanBuildFrom : CanBuildFrom[String, Char, String]

Attributes
implicit
def synchronized [T0] (arg0: ⇒ T0): T0

Attributes
final
Definition Classes
AnyRef
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
implicit def unaugmentString (x: StringOps): String

Attributes
implicit
implicit def unitArrayOps (xs: Array[Unit]): ArrayOps[Unit]

Attributes
implicit
implicit def unwrapString (ws: WrappedString): String

Attributes
implicit
Definition Classes
LowPriorityImplicits
def wait (): Unit

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

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

Attributes
final
Definition Classes
AnyRef
Annotations
@throws()
implicit def wrapBooleanArray (xs: Array[Boolean]): WrappedArray[Boolean]

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def wrapByteArray (xs: Array[Byte]): WrappedArray[Byte]

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def wrapCharArray (xs: Array[Char]): WrappedArray[Char]

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def wrapDoubleArray (xs: Array[Double]): WrappedArray[Double]

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def wrapFloatArray (xs: Array[Float]): WrappedArray[Float]

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def wrapIntArray (xs: Array[Int]): WrappedArray[Int]

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def wrapLongArray (xs: Array[Long]): WrappedArray[Long]

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def wrapRefArray [T <: AnyRef] (xs: Array[T]): WrappedArray[T]

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def wrapShortArray (xs: Array[Short]): WrappedArray[Short]

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def wrapString (s: String): WrappedString

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def wrapUnitArray (xs: Array[Unit]): WrappedArray[Unit]

Attributes
implicit
Definition Classes
LowPriorityImplicits
implicit def zipped2ToTraversable [El1, El2] (zz: (_$1, _$2)#Zipped[_, El1, _, El2]): Traversable[(El1, El2)]

Attributes
implicit
implicit def zipped3ToTraversable [El1, El2, El3] (zz: (_$5, _$6, _$7)#Zipped[_, El1, _, El2, _, El3]): Traversable[(El1, El2, El3)]

Attributes
implicit

Deprecated Value Members

def error (message: String): Nothing

Annotations
@deprecated
Deprecated
Use sys.error(message) instead
def exit (status: Int): Nothing

Annotations
@deprecated
Deprecated
Use sys.exit(status) instead
def exit (): Nothing

Annotations
@deprecated
Deprecated
Use sys.exit() instead
def format (text: String, xs: Any*): String

Annotations
@deprecated
Deprecated
Use formatString.format(args: _*) or arg.formatted(formatString) instead

Predef

object Predef extends LowPriorityImplicits

Type Members

class <:< [-From, +To] extends (From) ⇒ To with Serializable

class =:= [From, To] extends (From) ⇒ To with Serializable

class ArrowAssoc [A] extends AnyRef

type Class [T] = Class[T]

type ClassManifest [T] = ClassManifest[T]

class DummyImplicit extends AnyRef

class Ensuring [A] extends AnyRef

type Function [-A, +B] = (A) ⇒ B

type Manifest [T] = Manifest[T]

type Map [A, +B] = Map[A, B]

type OptManifest [T] = OptManifest[T]

type Pair [+A, +B] = (A, B)

type Set [A] = Set[A]

type String = String

type Triple [+A, +B, +C] = (A, B, C)

class <%< [-From, +To] extends (From) ⇒ To with Serializable

Value Members

def != (arg0: AnyRef): Boolean

def != (arg0: Any): Boolean

def ## (): Int

val $scope : xml.TopScope.type

object <%< extends Serializable

object =:= extends Serializable

def == (arg0: AnyRef): Boolean

def == (arg0: Any): Boolean

val AnyRef : SpecializableCompanion

implicit def Boolean2boolean (x: Boolean): Boolean

implicit def Boolean2booleanNullConflict (x: Null): Boolean

implicit def Byte2byte (x: Byte): Byte

implicit def Byte2byteNullConflict (x: Null): Byte

implicit def Character2char (x: Character): Char

implicit def Character2charNullConflict (x: Null): Char

val ClassManifest : reflect.ClassManifest.type

implicit def Double2double (x: Double): Double

implicit def Double2doubleNullConflict (x: Null): Double

object DummyImplicit extends AnyRef

implicit def Float2float (x: Float): Float

implicit def Float2floatNullConflict (x: Null): Float

implicit def Integer2int (x: Integer): Int

implicit def Integer2intNullConflict (x: Null): Int

implicit def Long2long (x: Long): Long

implicit def Long2longNullConflict (x: Null): Long

val Manifest : reflect.Manifest.type

val Map : scala.collection.immutable.Map.type

val NoManifest : reflect.NoManifest.type

object Pair extends Serializable

val Set : scala.collection.immutable.Set.type

implicit def Short2short (x: Short): Short

implicit def Short2shortNullConflict (x: Null): Short

object Triple extends Serializable

implicit def any2ArrowAssoc [A] (x: A): ArrowAssoc[A]

implicit def any2Ensuring [A] (x: A): Ensuring[A]

implicit def any2stringadd (x: Any): StringAdd

implicit def arrayToCharSequence (xs: Array[Char]): CharSequence

def asInstanceOf [T0] : T0

def assert (assertion: Boolean, message: ⇒ Any): Unit

def assert (assertion: Boolean): Unit

def assume (assumption: Boolean, message: ⇒ Any): Unit

def assume (assumption: Boolean): Unit

implicit def augmentString (x: String): StringOps

implicit def boolean2Boolean (x: Boolean): Boolean

implicit def boolean2BooleanConflict (x: Boolean): AnyRef

implicit def booleanArrayOps (xs: Array[Boolean]): ArrayOps[Boolean]

implicit def booleanWrapper (x: Boolean): RichBoolean

implicit def byte2Byte (x: Byte): Byte

implicit def byte2ByteConflict (x: Byte): AnyRef

implicit def byte2double (x: Byte): Double

implicit def byte2float (x: Byte): Float

implicit def byte2int (x: Byte): Int

implicit def byte2long (x: Byte): Long

implicit def byte2short (x: Byte): Short

implicit def byteArrayOps (xs: Array[Byte]): ArrayOps[Byte]

implicit def byteWrapper (x: Byte): RichByte

implicit def char2Character (x: Char): Character

implicit def char2CharacterConflict (x: Char): AnyRef

implicit def char2double (x: Char): Double

implicit def char2float (x: Char): Float