Scala Library
scala

object Predef
[source: scala/Predef.scala]
object Predef
extends AnyRef
The Predef object provides definitions that are accessible in all Scala compilation units without explicit qualification.
Type Summary
type ArrayIndexOutOfBoundsException
type Character
type Class
type ClassCastException
type Error
type Exception
type Function
type IllegalArgumentException
type IndexOutOfBoundsException
type Integer
type Map
type NoSuchElementException
type NullPointerException
type NumberFormatException
type Pair
type Runnable
type RuntimeException
type Set
type String
type StringIndexOutOfBoundsException
type Throwable
type Triple
type UnsupportedOperationException
type boolean
type byte
type char
type double
type float
type int
type long
type short
type unit
Value Summary
val Map : Map
val Set : Set
Method Summary
def Tuple [A1, A2](x1 : A1, x2 : A2) : (A1, A2)
def Tuple [A1, A2, A3, A4, A5, A6](x1 : A1, x2 : A2, x3 : A3, x4 : A4, x5 : A5, x6 : A6) : (A1, A2, A3, A4, A5, A6)
def Tuple [A1, A2, A3, A4, A5](x1 : A1, x2 : A2, x3 : A3, x4 : A4, x5 : A5) : (A1, A2, A3, A4, A5)
def Tuple [A1, A2, A3, A4, A5, A6, A7, A8, A9](x1 : A1, x2 : A2, x3 : A3, x4 : A4, x5 : A5, x6 : A6, x7 : A7, x8 : A8, x9 : A9) : (A1, A2, A3, A4, A5, A6, A7, A8, A9)
def Tuple [A1, A2, A3, A4](x1 : A1, x2 : A2, x3 : A3, x4 : A4) : (A1, A2, A3, A4)
def Tuple [A1, A2, A3, A4, A5, A6, A7](x1 : A1, x2 : A2, x3 : A3, x4 : A4, x5 : A5, x6 : A6, x7 : A7) : (A1, A2, A3, A4, A5, A6, A7)
def Tuple [A1](x1 : A1) : (A1)
def Tuple [A1, A2, A3](x1 : A1, x2 : A2, x3 : A3) : (A1, A2, A3)
def Tuple [A1, A2, A3, A4, A5, A6, A7, A8](x1 : A1, x2 : A2, x3 : A3, x4 : A4, x5 : A5, x6 : A6, x7 : A7, x8 : A8) : (A1, A2, A3, A4, A5, A6, A7, A8)
implicit def any2ArrowAssoc [A](x : A) : ArrowAssoc[A]
implicit def any2Ensuring [A](x : A) : Ensuring[A]
implicit def any2stringadd (x : Any) : scala.runtime.StringAdd
def assert (assertion : Boolean, message : Any) : Unit
def assert (assertion : Boolean) : Unit
def assume (assumption : Boolean) : Unit
def assume (assumption : Boolean, message : Any) : Unit
implicit def boolean2Boolean (x : Boolean) : java.lang.Boolean
implicit def booleanWrapper (x : Boolean) : RichBoolean
implicit def byte2Byte (x : Byte) : java.lang.Byte
Should use java.lang.Byte.valueOf(Byte), but only available in Java 1.5 and above.
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 byteWrapper (x : Byte) : RichByte
implicit def char2Character (x : Char) : java.lang.Character
Should use java.lang.Character.valueOf(Char), but only available in Java 1.5 and above.
implicit def char2double (x : Char) : Double
implicit def char2float (x : Char) : Float
implicit def char2int (x : Char) : Int
implicit def char2long (x : Char) : Long
implicit def charWrapper (c : Char) : RichChar
def classOf [T] : java.lang.Class[T]
Return the runtime representation of a class type.
def currentThread : java.lang.Thread
implicit def double2Double (x : Double) : java.lang.Double
implicit def doubleWrapper (x : Double) : RichDouble
def error (message : java.lang.String) : Nothing
implicit def exceptionWrapper (exc : java.lang.Throwable) : RichException
def exit (status : Int) : Nothing
def exit : Nothing
implicit def float2Float (x : Float) : java.lang.Float
implicit def float2double (x : Float) : Double
implicit def floatWrapper (x : Float) : RichFloat
implicit def forceArrayProjection [A](x : Projection[A]) : Array[A]
any array projection can be automatically converted into an array
implicit def forceRandomAccessCharSeq (x : RichString) : java.lang.String
any random access character seq (including rich string can be converted into a string
def format (text : java.lang.String, xs : Any*) : Unit
implicit def identity [A](x : A) : A
implicit def int2Integer (x : Int) : java.lang.Integer
Should use java.lang.Integer.valueOf(Int), but only available in Java 1.5 and above.
implicit def int2double (x : Int) : Double
implicit def int2float (x : Int) : Float
implicit def int2long (x : Int) : Long
implicit def intWrapper (x : Int) : RichInt
implicit def iterable2ordered [A](xs : Iterable[A])(implicit view$1 : (A) => Ordered[A]) : Ordered[Iterable[A]]
implicit def lazyStreamToConsable [A](xs : => Stream[A]) : scala.runtime.StreamCons[A]
implicit def long2Long (x : Long) : java.lang.Long
Should use java.lang.Long.valueOf(Long), but only available in Java 1.5 and above.
implicit def long2double (x : Long) : Double
implicit def long2float (x : Long) : Float
implicit def longWrapper (x : Long) : RichLong
def print (x : Any) : Unit
def printf (text : java.lang.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 : java.lang.String
def readLine (text : java.lang.String, args : Any*) : java.lang.String
def readLong : Long
def readShort : Short
def readf (format : java.lang.String) : List[Any]
def readf1 (format : java.lang.String) : Any
def readf2 (format : java.lang.String) : (Any, Any)
def readf3 (format : java.lang.String) : (Any, Any, Any)
def require (requirement : Boolean, message : Any) : Unit
def require (requirement : Boolean) : Unit
implicit def seqToCharSequence (xs : RandomAccessSeq[Char]) : java.lang.CharSequence
implicit def short2Short (x : Short) : java.lang.Short
Should use java.lang.Short.valueOf(Short), but only available in Java 1.5 and above.
implicit def short2double (x : Short) : Double
implicit def short2float (x : Short) : Float
implicit def short2int (x : Short) : Int
implicit def short2long (x : Short) : Long
implicit def shortWrapper (x : Short) : RichShort
implicit def stringBuilderWrapper (x : StringBuilder) : RichStringBuilder
implicit def stringWrapper (x : java.lang.String) : RichString
implicit def tuple22ordered [A1, A2](x : (A1, A2))(implicit view$2 : (A1) => Ordered[A1], implicit view$3 : (A2) => Ordered[A2]) : Ordered[(A1, A2)]
implicit def tuple32ordered [A1, A2, A3](x : (A1, A2, A3))(implicit view$4 : (A1) => Ordered[A1], implicit view$5 : (A2) => Ordered[A2], implicit view$6 : (A3) => Ordered[A3]) : Ordered[(A1, A2, A3)]
implicit def tuple42ordered [A1, A2, A3, A4](x : (A1, A2, A3, A4))(implicit view$7 : (A1) => Ordered[A1], implicit view$8 : (A2) => Ordered[A2], implicit view$9 : (A3) => Ordered[A3], implicit view$10 : (A4) => Ordered[A4]) : Ordered[(A1, A2, A3, A4)]
implicit def tuple52ordered [A1, A2, A3, A4, A5](x : (A1, A2, A3, A4, A5))(implicit view$11 : (A1) => Ordered[A1], implicit view$12 : (A2) => Ordered[A2], implicit view$13 : (A3) => Ordered[A3], implicit view$14 : (A4) => Ordered[A4], implicit view$15 : (A5) => Ordered[A5]) : Ordered[(A1, A2, A3, A4, A5)]
implicit def tuple62ordered [A1, A2, A3, A4, A5, A6](x : (A1, A2, A3, A4, A5, A6))(implicit view$16 : (A1) => Ordered[A1], implicit view$17 : (A2) => Ordered[A2], implicit view$18 : (A3) => Ordered[A3], implicit view$19 : (A4) => Ordered[A4], implicit view$20 : (A5) => Ordered[A5], implicit view$21 : (A6) => Ordered[A6]) : Ordered[(A1, A2, A3, A4, A5, A6)]
implicit def tuple72ordered [A1, A2, A3, A4, A5, A6, A7](x : (A1, A2, A3, A4, A5, A6, A7))(implicit view$22 : (A1) => Ordered[A1], implicit view$23 : (A2) => Ordered[A2], implicit view$24 : (A3) => Ordered[A3], implicit view$25 : (A4) => Ordered[A4], implicit view$26 : (A5) => Ordered[A5], implicit view$27 : (A6) => Ordered[A6], implicit view$28 : (A7) => Ordered[A7]) : Ordered[(A1, A2, A3, A4, A5, A6, A7)]
implicit def tuple82ordered [A1, A2, A3, A4, A5, A6, A7, A8](x : (A1, A2, A3, A4, A5, A6, A7, A8))(implicit view$29 : (A1) => Ordered[A1], implicit view$30 : (A2) => Ordered[A2], implicit view$31 : (A3) => Ordered[A3], implicit view$32 : (A4) => Ordered[A4], implicit view$33 : (A5) => Ordered[A5], implicit view$34 : (A6) => Ordered[A6], implicit view$35 : (A7) => Ordered[A7], implicit view$36 : (A8) => Ordered[A8]) : Ordered[(A1, A2, A3, A4, A5, A6, A7, A8)]
implicit def tuple92ordered [A1, A2, A3, A4, A5, A6, A7, A8, A9](x : (A1, A2, A3, A4, A5, A6, A7, A8, A9))(implicit view$37 : (A1) => Ordered[A1], implicit view$38 : (A2) => Ordered[A2], implicit view$39 : (A3) => Ordered[A3], implicit view$40 : (A4) => Ordered[A4], implicit view$41 : (A5) => Ordered[A5], implicit view$42 : (A6) => Ordered[A6], implicit view$43 : (A7) => Ordered[A7], implicit view$44 : (A8) => Ordered[A8], implicit view$45 : (A9) => Ordered[A9]) : Ordered[(A1, A2, A3, A4, A5, A6, A7, A8, A9)]
implicit def unit2ordered (x : Unit) : Ordered[Unit]
Methods inherited from AnyRef
getClass, hashCode, equals, clone, toString, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized
Methods inherited from Any
==, !=, isInstanceOf, asInstanceOf
Class Summary
class ArrowAssoc [A](x : A) extends AnyRef
class Ensuring [A](x : A) extends AnyRef
Object Summary
object Pair extends AnyRef
object Triple extends AnyRef
Type Details
@deprecated

type byte
@deprecated

type short
@deprecated

type char
@deprecated

type int
@deprecated

type long
@deprecated

type float
@deprecated

type double
@deprecated

type boolean
@deprecated

type unit
@deprecated

type Integer
Deprecated
use java.lang.Integer instead
@deprecated

type Character
Deprecated
use java.lang.Character instead
type String
type Class
type Runnable
type Throwable
type Exception
type Error
type RuntimeException
type NullPointerException
type ClassCastException
type IndexOutOfBoundsException
type ArrayIndexOutOfBoundsException
type StringIndexOutOfBoundsException
type UnsupportedOperationException
type IllegalArgumentException
type NoSuchElementException
type NumberFormatException
type Function
type Map
type Set
type Pair
type Triple
Value Details
val Map : Map
val Set : Set
Method Details
def classOf[T] : java.lang.Class[T]
Return the runtime representation of a class type.
def error(message : java.lang.String) : Nothing
def exit : Nothing
def exit(status : Int) : Nothing
def assert(assertion : Boolean) : Unit
def assert(assertion : Boolean, message : Any) : Unit
def assume(assumption : Boolean) : Unit
def assume(assumption : Boolean, message : Any) : Unit
def require(requirement : Boolean) : Unit
def require(requirement : Boolean, message : Any) : Unit
implicit def any2Ensuring[A](x : A) : Ensuring[A]
implicit def any2ArrowAssoc[A](x : A) : ArrowAssoc[A]
def Tuple[A1](x1 : A1) : (A1)
def Tuple[A1, A2](x1 : A1, x2 : A2) : (A1, A2)
def Tuple[A1, A2, A3](x1 : A1, x2 : A2, x3 : A3) : (A1, A2, A3)
def Tuple[A1, A2, A3, A4](x1 : A1, x2 : A2, x3 : A3, x4 : A4) : (A1, A2, A3, A4)
def Tuple[A1, A2, A3, A4, A5](x1 : A1, x2 : A2, x3 : A3, x4 : A4, x5 : A5) : (A1, A2, A3, A4, A5)
def Tuple[A1, A2, A3, A4, A5, A6](x1 : A1, x2 : A2, x3 : A3, x4 : A4, x5 : A5, x6 : A6) : (A1, A2, A3, A4, A5, A6)
def Tuple[A1, A2, A3, A4, A5, A6, A7](x1 : A1, x2 : A2, x3 : A3, x4 : A4, x5 : A5, x6 : A6, x7 : A7) : (A1, A2, A3, A4, A5, A6, A7)
def Tuple[A1, A2, A3, A4, A5, A6, A7, A8](x1 : A1, x2 : A2, x3 : A3, x4 : A4, x5 : A5, x6 : A6, x7 : A7, x8 : A8) : (A1, A2, A3, A4, A5, A6, A7, A8)
def Tuple[A1, A2, A3, A4, A5, A6, A7, A8, A9](x1 : A1, x2 : A2, x3 : A3, x4 : A4, x5 : A5, x6 : A6, x7 : A7, x8 : A8, x9 : A9) : (A1, A2, A3, A4, A5, A6, A7, A8, A9)
def print(x : Any) : Unit
def println : Unit
def println(x : Any) : Unit
def printf(text : java.lang.String, xs : Any*) : Unit
def format(text : java.lang.String, xs : Any*) : Unit
def readLine : java.lang.String
def readLine(text : java.lang.String, args : Any*) : java.lang.String
def readBoolean : Boolean
def readByte : Byte
def readShort : Short
def readChar : Char
def readInt : Int
def readLong : Long
def readFloat : Float
def readDouble : Double
def readf(format : java.lang.String) : List[Any]
def readf1(format : java.lang.String) : Any
def readf2(format : java.lang.String) : (Any, Any)
def readf3(format : java.lang.String) : (Any, Any, Any)
implicit def identity[A](x : A) : A
implicit def byteWrapper(x : Byte) : RichByte
implicit def shortWrapper(x : Short) : RichShort
implicit def intWrapper(x : Int) : RichInt
implicit def charWrapper(c : Char) : RichChar
implicit def longWrapper(x : Long) : RichLong
implicit def floatWrapper(x : Float) : RichFloat
implicit def doubleWrapper(x : Double) : RichDouble
implicit def booleanWrapper(x : Boolean) : RichBoolean
implicit def stringWrapper(x : java.lang.String) : RichString
implicit def stringBuilderWrapper(x : StringBuilder) : RichStringBuilder
implicit def any2stringadd(x : Any) : scala.runtime.StringAdd
implicit def exceptionWrapper(exc : java.lang.Throwable) : RichException
implicit def unit2ordered(x : Unit) : Ordered[Unit]
implicit def iterable2ordered[A](xs : Iterable[A])(implicit view$1 : (A) => Ordered[A]) : Ordered[Iterable[A]]
implicit def tuple22ordered[A1, A2](x : (A1, A2))(implicit view$2 : (A1) => Ordered[A1], implicit view$3 : (A2) => Ordered[A2]) : Ordered[(A1, A2)]
implicit def tuple32ordered[A1, A2, A3](x : (A1, A2, A3))(implicit view$4 : (A1) => Ordered[A1], implicit view$5 : (A2) => Ordered[A2], implicit view$6 : (A3) => Ordered[A3]) : Ordered[(A1, A2, A3)]
implicit def tuple42ordered[A1, A2, A3, A4](x : (A1, A2, A3, A4))(implicit view$7 : (A1) => Ordered[A1], implicit view$8 : (A2) => Ordered[A2], implicit view$9 : (A3) => Ordered[A3], implicit view$10 : (A4) => Ordered[A4]) : Ordered[(A1, A2, A3, A4)]
implicit def tuple52ordered[A1, A2, A3, A4, A5](x : (A1, A2, A3, A4, A5))(implicit view$11 : (A1) => Ordered[A1], implicit view$12 : (A2) => Ordered[A2], implicit view$13 : (A3) => Ordered[A3], implicit view$14 : (A4) => Ordered[A4], implicit view$15 : (A5) => Ordered[A5]) : Ordered[(A1, A2, A3, A4, A5)]
implicit def tuple62ordered[A1, A2, A3, A4, A5, A6](x : (A1, A2, A3, A4, A5, A6))(implicit view$16 : (A1) => Ordered[A1], implicit view$17 : (A2) => Ordered[A2], implicit view$18 : (A3) => Ordered[A3], implicit view$19 : (A4) => Ordered[A4], implicit view$20 : (A5) => Ordered[A5], implicit view$21 : (A6) => Ordered[A6]) : Ordered[(A1, A2, A3, A4, A5, A6)]
implicit def tuple72ordered[A1, A2, A3, A4, A5, A6, A7](x : (A1, A2, A3, A4, A5, A6, A7))(implicit view$22 : (A1) => Ordered[A1], implicit view$23 : (A2) => Ordered[A2], implicit view$24 : (A3) => Ordered[A3], implicit view$25 : (A4) => Ordered[A4], implicit view$26 : (A5) => Ordered[A5], implicit view$27 : (A6) => Ordered[A6], implicit view$28 : (A7) => Ordered[A7]) : Ordered[(A1, A2, A3, A4, A5, A6, A7)]
implicit def tuple82ordered[A1, A2, A3, A4, A5, A6, A7, A8](x : (A1, A2, A3, A4, A5, A6, A7, A8))(implicit view$29 : (A1) => Ordered[A1], implicit view$30 : (A2) => Ordered[A2], implicit view$31 : (A3) => Ordered[A3], implicit view$32 : (A4) => Ordered[A4], implicit view$33 : (A5) => Ordered[A5], implicit view$34 : (A6) => Ordered[A6], implicit view$35 : (A7) => Ordered[A7], implicit view$36 : (A8) => Ordered[A8]) : Ordered[(A1, A2, A3, A4, A5, A6, A7, A8)]
implicit def tuple92ordered[A1, A2, A3, A4, A5, A6, A7, A8, A9](x : (A1, A2, A3, A4, A5, A6, A7, A8, A9))(implicit view$37 : (A1) => Ordered[A1], implicit view$38 : (A2) => Ordered[A2], implicit view$39 : (A3) => Ordered[A3], implicit view$40 : (A4) => Ordered[A4], implicit view$41 : (A5) => Ordered[A5], implicit view$42 : (A6) => Ordered[A6], implicit view$43 : (A7) => Ordered[A7], implicit view$44 : (A8) => Ordered[A8], implicit view$45 : (A9) => Ordered[A9]) : Ordered[(A1, A2, A3, A4, A5, A6, A7, A8, A9)]
implicit def byte2short(x : Byte) : Short
implicit def byte2int(x : Byte) : Int
implicit def byte2long(x : Byte) : Long
implicit def byte2float(x : Byte) : Float
implicit def byte2double(x : Byte) : Double
implicit def short2int(x : Short) : Int
implicit def short2long(x : Short) : Long
implicit def short2float(x : Short) : Float
implicit def short2double(x : Short) : Double
implicit def char2int(x : Char) : Int
implicit def char2long(x : Char) : Long
implicit def char2float(x : Char) : Float
implicit def char2double(x : Char) : Double
implicit def int2long(x : Int) : Long
implicit def int2float(x : Int) : Float
implicit def int2double(x : Int) : Double
implicit def long2float(x : Long) : Float
implicit def long2double(x : Long) : Double
implicit def float2double(x : Float) : Double
implicit def byte2Byte(x : Byte) : java.lang.Byte
Should use java.lang.Byte.valueOf(Byte), but only available in Java 1.5 and above.
implicit def short2Short(x : Short) : java.lang.Short
Should use java.lang.Short.valueOf(Short), but only available in Java 1.5 and above.
implicit def char2Character(x : Char) : java.lang.Character
Should use java.lang.Character.valueOf(Char), but only available in Java 1.5 and above.
implicit def int2Integer(x : Int) : java.lang.Integer
Should use java.lang.Integer.valueOf(Int), but only available in Java 1.5 and above.
implicit def long2Long(x : Long) : java.lang.Long
Should use java.lang.Long.valueOf(Long), but only available in Java 1.5 and above.
implicit def float2Float(x : Float) : java.lang.Float
implicit def double2Double(x : Double) : java.lang.Double
implicit def boolean2Boolean(x : Boolean) : java.lang.Boolean
implicit def forceArrayProjection[A](x : Projection[A]) : Array[A]
any array projection can be automatically converted into an array
implicit def forceRandomAccessCharSeq(x : RichString) : java.lang.String
any random access character seq (including rich string can be converted into a string
implicit def lazyStreamToConsable[A](xs : => Stream[A]) : scala.runtime.StreamCons[A]
implicit def seqToCharSequence(xs : RandomAccessSeq[Char]) : java.lang.CharSequence
def currentThread : java.lang.Thread
Scala Library