Class

scala.concurrent

SyncVar

Related Doc: package concurrent

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class SyncVar[A] extends AnyRef

A class to provide safe concurrent access to a mutable cell. All methods are synchronized.

A

type of the contained value

Source
SyncVar.scala
Version

1.0, 10/03/2003

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Inherited
  1. SyncVar
  2. AnyRef
  3. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new SyncVar()

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Value Members

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

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    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

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    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. def +(other: String): String

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    Implicit information
    This member is added by an implicit conversion from SyncVar[A] to any2stringadd[SyncVar[A]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (SyncVar[A], B)

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    Implicit information
    This member is added by an implicit conversion from SyncVar[A] to ArrowAssoc[SyncVar[A]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean

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    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).

    returns

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

    Definition Classes
    AnyRef → Any
  6. final def asInstanceOf[T0]: T0

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    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.

  7. def clone(): AnyRef

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    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

  8. def ensuring(cond: (SyncVar[A]) ⇒ Boolean, msg: ⇒ Any): SyncVar[A]

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    Implicit information
    This member is added by an implicit conversion from SyncVar[A] to Ensuring[SyncVar[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  9. def ensuring(cond: (SyncVar[A]) ⇒ Boolean): SyncVar[A]

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    Implicit information
    This member is added by an implicit conversion from SyncVar[A] to Ensuring[SyncVar[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  10. def ensuring(cond: Boolean, msg: ⇒ Any): SyncVar[A]

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    Implicit information
    This member is added by an implicit conversion from SyncVar[A] to Ensuring[SyncVar[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: Boolean): SyncVar[A]

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    Implicit information
    This member is added by an implicit conversion from SyncVar[A] to Ensuring[SyncVar[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. final def eq(arg0: AnyRef): Boolean

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

    Tests whether the argument (that) 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
  13. def equals(arg0: Any): Boolean

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    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
  14. def finalize(): Unit

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    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

  15. def formatted(fmtstr: String): String

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    Returns string formatted according to given format string.

    Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).

    Implicit information
    This member is added by an implicit conversion from SyncVar[A] to StringFormat[SyncVar[A]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  16. def get(timeout: Long): Option[A]

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    Waits for this SyncVar to become defined at least for timeout milliseconds (possibly more), and gets its value.

    Waits for this SyncVar to become defined at least for timeout milliseconds (possibly more), and gets its value.

    timeout

    the amount of milliseconds to wait, 0 means forever

    returns

    None if variable is undefined after timeout, Some(value) otherwise

  17. def get: A

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    Waits for this SyncVar to become defined and returns the result, without modifying the stored value.

    Waits for this SyncVar to become defined and returns the result, without modifying the stored value.

    returns

    value that is held in this container

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

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    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

  19. def hashCode(): Int

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    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
  20. final def isInstanceOf[T0]: Boolean

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    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
  21. def isSet: Boolean

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    Checks whether a value is stored in the synchronized variable

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

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    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
  23. final def notify(): Unit

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    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

  24. final def notifyAll(): Unit

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    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

  25. def put(x: A): Unit

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    Places a value in the SyncVar.

    Places a value in the SyncVar. If the SyncVar already has a stored value, it waits until another thread takes it

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

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    Definition Classes
    AnyRef
  27. def take(timeout: Long): A

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    Waits for this SyncVar to become defined at least for timeout milliseconds (possibly more), and takes its value by first reading and then removing the value from the SyncVar.

    Waits for this SyncVar to become defined at least for timeout milliseconds (possibly more), and takes its value by first reading and then removing the value from the SyncVar.

    timeout

    the amount of milliseconds to wait, 0 means forever

    returns

    the value or a throws an exception if the timeout occurs

    Exceptions thrown

    NoSuchElementException on timeout

  28. def take(): A

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    Waits for this SyncVar to become defined and returns the result, unsetting the stored value before returning.

    Waits for this SyncVar to become defined and returns the result, unsetting the stored value before returning.

    returns

    value that was held in this container

  29. def toString(): String

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    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
  30. final def wait(): Unit

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

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  33. def [B](y: B): (SyncVar[A], B)

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    Implicit information
    This member is added by an implicit conversion from SyncVar[A] to ArrowAssoc[SyncVar[A]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Deprecated Value Members

  1. def set(x: A): Unit

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    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) Use put instead, as set is potentially error-prone

  2. def unset(): Unit

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    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) Use take instead, as unset is potentially error-prone

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from SyncVar[A] to any2stringadd[SyncVar[A]]

Inherited by implicit conversion StringFormat from SyncVar[A] to StringFormat[SyncVar[A]]

Inherited by implicit conversion Ensuring from SyncVar[A] to Ensuring[SyncVar[A]]

Inherited by implicit conversion ArrowAssoc from SyncVar[A] to ArrowAssoc[SyncVar[A]]

Ungrouped