scala

Predef

Related Doc: package scala

object Predef extends LowPriorityImplicits with DeprecatedPredef

The Predef object provides definitions that are accessible in all Scala compilation units without explicit qualification.

Commonly Used Types

Predef provides type aliases for types which are commonly used, such as the immutable collection types scala.collection.immutable.Map, scala.collection.immutable.Set, and the scala.collection.immutable.List constructors (scala.collection.immutable.:: and scala.collection.immutable.Nil).

Console I/O

Predef provides a number of simple functions for console I/O, such as print, println, readLine, readInt, etc. These functions are all aliases of the functions provided by scala.Console.

Assertions

A set of assert functions are provided for use as a way to document and dynamically check invariants in code. Invocations of assert can be elided at compile time by providing the command line option -Xdisable-assertions, which raises -Xelide-below above elidable.ASSERTION, to the scalac command.

Variants of assert intended for use with static analysis tools are also provided: assume, require and ensuring. require and ensuring are intended for use as a means of design-by-contract style specification of pre- and post-conditions on functions, with the intention that these specifications could be consumed by a static analysis tool. For instance,

def addNaturals(nats: List[Int]): Int = {
  require(nats forall (_ >= 0), "List contains negative numbers")
  nats.foldLeft(0)(_ + _)
} ensuring(_ >= 0)

The declaration of addNaturals states that the list of integers passed should only contain natural numbers (i.e. non-negative), and that the result returned will also be natural. require is distinct from assert in that if the condition fails, then the caller of the function is to blame rather than a logical error having been made within addNaturals itself. ensures is a form of assert that declares the guarantee the function is providing with regards to its return value.

Implicit Conversions

A number of commonly applied implicit conversions are also defined here, and in the parent type scala.LowPriorityImplicits. Implicit conversions are provided for the "widening" of numeric values, for instance, converting a Short value to a Long value as required, and to add additional higher-order functions to Array values. These are described in more detail in the documentation of scala.Array.

Source
Predef.scala
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Type Members

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

    An instance of A <:< B witnesses that A is a subtype of B.

    An instance of A <:< B witnesses that A is a subtype of B. Requiring an implicit argument of the type A <:< B encodes the generalized constraint A <: B.

    Annotations
    @implicitNotFound( msg = ... )
    Note

    we need a new type constructor <:< and evidence conforms, as reusing Function1 and identity leads to ambiguities in case of type errors (any2stringadd is inferred)

    To constrain any abstract type T that's in scope in a method's argument list (not just the method's own type parameters) simply add an implicit argument of type T <:< U, where U is the required upper bound; or for lower-bounds, use: L <:< T, where L is the required lower bound.

    In part contributed by Jason Zaugg.

  2. sealed abstract class =:=[From, To] extends (From) ⇒ To with Serializable

    An instance of A =:= B witnesses that the types A and B are equal.

    An instance of A =:= B witnesses that the types A and B are equal.

    Annotations
    @implicitNotFound( msg = ... )
    See also

    <:< for expressing subtyping constraints

  3. implicit final class ArrayCharSequence extends CharSequence

  4. implicit final class ArrowAssoc[A] extends AnyVal

  5. type Class[T] = java.lang.Class[T]

  6. class DummyImplicit extends AnyRef

    A type for which there is always an implicit value.

    A type for which there is always an implicit value.

    See also

    scala.Array$, method fallbackCanBuildFrom

  7. implicit final class Ensuring[A] extends AnyVal

  8. type Function[-A, +B] = (A) ⇒ B

  9. type Manifest[T] = reflect.Manifest[T]

    Annotations
    @implicitNotFound( msg = "No Manifest available for ${T}." )
  10. type Map[A, +B] = collection.immutable.Map[A, B]

  11. type OptManifest[T] = reflect.OptManifest[T]

  12. implicit final class RichException extends AnyVal

  13. implicit final class SeqCharSequence extends CharSequence

  14. type Set[A] = collection.immutable.Set[A]

  15. type String = java.lang.String

  16. implicit final class StringFormat[A] extends AnyVal

  17. implicit final class any2stringadd[A] extends AnyVal

  18. type ClassManifest[T] = ClassTag[T]

    Annotations
    @implicitNotFound( msg = ... ) @deprecated
    Deprecated

    (Since version 2.10.0) Use scala.reflect.ClassTag instead

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

    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use built-in tuple syntax or Tuple2 instead

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

    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use built-in tuple syntax or Tuple3 instead

Value Members

  1. final def !=(arg0: Any): Boolean

    Test two objects for inequality.

    Test two objects for inequality.

    returns

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

    Definition Classes
    AnyRef → Any
  2. 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
  3. implicit def $conforms[A]: <:<[A, A]

  4. object =:= extends Serializable

  5. final def ==(arg0: Any): Boolean

    The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    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
  6. def ???: Nothing

    ??? can be used for marking methods that remain to be implemented.

    ??? can be used for marking methods that remain to be implemented.

    Exceptions thrown

    NotImplementedError

  7. implicit def Boolean2boolean(x: java.lang.Boolean): Boolean

  8. implicit def Byte2byte(x: java.lang.Byte): Byte

  9. implicit def Character2char(x: Character): Char

  10. implicit def Double2double(x: java.lang.Double): Double

  11. object DummyImplicit

  12. implicit def Float2float(x: java.lang.Float): Float

  13. implicit def Integer2int(x: Integer): Int

  14. implicit def Long2long(x: java.lang.Long): Long

  15. val Manifest: ManifestFactory.type

  16. val Map: collection.immutable.Map.type

  17. val NoManifest: reflect.NoManifest.type

  18. val Set: collection.immutable.Set.type

  19. implicit def Short2short(x: java.lang.Short): Short

  20. implicit val StringCanBuildFrom: CanBuildFrom[String, Char, String]

  21. implicit def _booleanArrayOps(xs: Array[Boolean]): ofBoolean

  22. implicit def _byteArrayOps(xs: Array[Byte]): ofByte

  23. implicit def _charArrayOps(xs: Array[Char]): ofChar

  24. implicit def _doubleArrayOps(xs: Array[Double]): ofDouble

  25. implicit def _floatArrayOps(xs: Array[Float]): ofFloat

  26. implicit def _intArrayOps(xs: Array[Int]): ofInt

  27. implicit def _longArrayOps(xs: Array[Long]): ofLong

  28. implicit def _refArrayOps[T <: AnyRef](xs: Array[T]): ofRef[T]

  29. implicit def _shortArrayOps(xs: Array[Short]): ofShort

  30. implicit def _unitArrayOps(xs: Array[Unit]): ofUnit

  31. 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.

  32. final 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.

    assertion

    the expression to test

    message

    a String to include in the failure message

    Annotations
    @elidable( level = ASSERTION ) @inline()
    See also

    elidable

  33. 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.

    assertion

    the expression to test

    Annotations
    @elidable( level = ASSERTION )
    See also

    elidable

  34. final 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.

    assumption

    the expression to test

    message

    a String to include in the failure message

    Annotations
    @elidable( level = ASSERTION ) @inline()
    See also

    elidable

  35. 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.

    assumption

    the expression to test

    Annotations
    @elidable( level = ASSERTION )
    See also

    elidable

  36. implicit def augmentString(x: String): StringOps

    Annotations
    @inline()
  37. implicit def boolean2Boolean(x: Boolean): java.lang.Boolean

  38. implicit def booleanWrapper(x: Boolean): RichBoolean

    Definition Classes
    LowPriorityImplicits
    Annotations
    @inline()
  39. implicit def byte2Byte(x: Byte): java.lang.Byte

  40. implicit def byteWrapper(x: Byte): RichByte

    We prefer the java.lang.* boxed types to these wrappers in any potential conflicts.

    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.

    Note - these are inlined because they are value classes, but the call to xxxWrapper is not eliminated even though it does nothing. Even inlined, every call site does a no-op retrieval of Predef's MODULE$ because maybe loading Predef has side effects!

    Definition Classes
    LowPriorityImplicits
    Annotations
    @inline()
  41. implicit def char2Character(x: Char): Character

  42. implicit def charWrapper(c: Char): RichChar

    Definition Classes
    LowPriorityImplicits
    Annotations
    @inline()
  43. def classOf[T]: Class[T]

    Retrieve the runtime representation of a class type.

    Retrieve the runtime representation of a class type. classOf[T] is equivalent to the class literal T.class in Java.

    Example:
    1. val listClass = classOf[List[_]]
      // listClass is java.lang.Class[List[_]] = class scala.collection.immutable.List
      
      val mapIntString = classOf[Map[Int,String]]
      // mapIntString is java.lang.Class[Map[Int,String]] = interface scala.collection.immutable.Map
  44. 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

  45. implicit def double2Double(x: Double): java.lang.Double

  46. implicit def doubleWrapper(x: Double): RichDouble

    Definition Classes
    LowPriorityImplicits
    Annotations
    @inline()
  47. 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
  48. 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
  49. implicit def fallbackStringCanBuildFrom[T]: CanBuildFrom[String, T, collection.immutable.IndexedSeq[T]]

    Definition Classes
    LowPriorityImplicits
  50. 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

  51. implicit def float2Float(x: Float): java.lang.Float

  52. implicit def floatWrapper(x: Float): RichFloat

    Definition Classes
    LowPriorityImplicits
    Annotations
    @inline()
  53. implicit def genericArrayOps[T](xs: Array[T]): ArrayOps[T]

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

    Definition Classes
    LowPriorityImplicits
  55. final 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.

    Definition Classes
    AnyRef → Any
    Note

    not specified by SLS as a member of AnyRef

  56. 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
  57. def identity[A](x: A): A

    Annotations
    @inline()
  58. def implicitly[T](implicit e: T): T

    Annotations
    @inline()
  59. implicit def int2Integer(x: Int): Integer

  60. implicit def intWrapper(x: Int): RichInt

    Definition Classes
    LowPriorityImplicits
    Annotations
    @inline()
  61. 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
  62. def locally[T](x: T): T

    Annotations
    @inline()
  63. implicit def long2Long(x: Long): java.lang.Long

  64. implicit def longWrapper(x: Long): RichLong

    Definition Classes
    LowPriorityImplicits
    Annotations
    @inline()
  65. def manifest[T](implicit m: Manifest[T]): Manifest[T]

  66. 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
  67. 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

  68. 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

  69. def optManifest[T](implicit m: OptManifest[T]): OptManifest[T]

  70. def print(x: Any): Unit

  71. def printf(text: String, xs: Any*): Unit

  72. def println(x: Any): Unit

  73. def println(): Unit

  74. final 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.

    requirement

    the expression to test

    message

    a String to include in the failure message

    Annotations
    @inline()
  75. 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.

    requirement

    the expression to test

  76. implicit def short2Short(x: Short): java.lang.Short

  77. implicit def shortWrapper(x: Short): RichShort

    Definition Classes
    LowPriorityImplicits
    Annotations
    @inline()
  78. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef
  79. def toString(): java.lang.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
  80. implicit def tuple2ToZippedOps[T1, T2](x: (T1, T2)): Ops[T1, T2]

  81. implicit def tuple3ToZippedOps[T1, T2, T3](x: (T1, T2, T3)): Ops[T1, T2, T3]

  82. implicit def unaugmentString(x: StringOps): String

    Annotations
    @inline()
  83. implicit def unwrapString(ws: WrappedString): String

    Definition Classes
    LowPriorityImplicits
  84. final def wait(): Unit

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

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

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

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

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

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

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

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

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

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

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

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

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

    Definition Classes
    LowPriorityImplicits

Deprecated Value Members

  1. val ClassManifest: ClassManifestFactory.type

    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) Use scala.reflect.ClassTag instead

  2. object Pair

    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use built-in tuple syntax or Tuple2 instead

  3. object Triple

    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use built-in tuple syntax or Tuple3 instead

  4. def any2ArrowAssoc[A](x: A): ArrowAssoc[A]

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use ArrowAssoc

  5. def any2Ensuring[A](x: A): Ensuring[A]

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use Ensuring

  6. def any2stringfmt(x: Any): StringFormat[Any]

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use StringFormat

  7. def arrayToCharSequence(xs: Array[Char]): CharSequence

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use ArrayCharSequence

  8. def booleanArrayOps(xs: Array[Boolean]): ArrayOps[Boolean]

    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0-M2) For binary compatibility only. Release new partest and remove in M3.

  9. def byteArrayOps(xs: Array[Byte]): ArrayOps[Byte]

    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0-M2) For binary compatibility only. Release new partest and remove in M3.

  10. def charArrayOps(xs: Array[Char]): ArrayOps[Char]

    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0-M2) For binary compatibility only. Release new partest and remove in M3.

  11. def classManifest[T](implicit m: ClassManifest[T]): ClassManifest[T]

    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) Use scala.reflect.classTag[T] instead

  12. def conforms[A]: <:<[A, A]

    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use implicitly[T <:< U] or identity instead.

  13. def doubleArrayOps(xs: Array[Double]): ArrayOps[Double]

    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0-M2) For binary compatibility only. Release new partest and remove in M3.

  14. def error(message: String): Nothing

    Annotations
    @deprecated
    Deprecated

    (Since version 2.9.0) Use sys.error(message) instead

  15. def exceptionWrapper(exc: scala.Throwable): RichException

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use Throwable directly

  16. def floatArrayOps(xs: Array[Float]): ArrayOps[Float]

    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0-M2) For binary compatibility only. Release new partest and remove in M3.

  17. def intArrayOps(xs: Array[Int]): ArrayOps[Int]

    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0-M2) For binary compatibility only. Release new partest and remove in M3.

  18. def longArrayOps(xs: Array[Long]): ArrayOps[Long]

    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0-M2) For binary compatibility only. Release new partest and remove in M3.

  19. def readBoolean(): Boolean

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  20. def readByte(): Byte

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  21. def readChar(): Char

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  22. def readDouble(): Double

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  23. def readFloat(): Float

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  24. def readInt(): Int

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  25. def readLine(text: String, args: Any*): String

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  26. def readLine(): String

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  27. def readLong(): Long

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  28. def readShort(): Short

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  29. def readf(format: String): List[Any]

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  30. def readf1(format: String): Any

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  31. def readf2(format: String): (Any, Any)

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  32. def readf3(format: String): (Any, Any, Any)

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use the method in scala.io.StdIn

  33. def refArrayOps[T <: AnyRef](xs: Array[T]): ArrayOps[T]

    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0-M2) For binary compatibility only. Release new partest and remove in M3.

  34. def seqToCharSequence(xs: collection.IndexedSeq[Char]): CharSequence

    Definition Classes
    DeprecatedPredef
    Annotations
    @deprecated
    Deprecated

    (Since version 2.11.0) Use SeqCharSequence

  35. def shortArrayOps(xs: Array[Short]): ArrayOps[Short]

    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0-M2) For binary compatibility only. Release new partest and remove in M3.

  36. def unitArrayOps(xs: Array[Unit]): ArrayOps[Unit]

    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0-M2) For binary compatibility only. Release new partest and remove in M3.

Inherited from DeprecatedPredef

Inherited from LowPriorityImplicits

Inherited from AnyRef

Inherited from Any

Ungrouped