Local

A Local is a ThreadLocal whose scope is flexible. The state of all Locals may be saved or restored onto the current thread by the user. This is useful for threading Locals through execution contexts.

Promises pass locals through control dependencies, not through data dependencies. This means that Locals have exactly the same semantics as ThreadLocals, if you think of continue (the asynchronous sequence operator) as semicolon (the synchronous sequence operator).

Because it's not meaningful to inherit control from two places, Locals don't have to worry about having to merge two Contexts.

Note: the implementation is optimized for situations in which save and restore optimizations are dominant.

Linear Supertypes

AnyRef, Any

Instance Constructors

new Local()

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
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final def ##(): Int

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

Definition Classes
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def apply(): Option[T]

Get the Local's optional value.
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clear(): Unit

Clear the Local's value.
Clear the Local's value. Other Locals are not modified.
General usage should be via letClear to avoid leaks.
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
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Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
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def equals(arg0: Any): Boolean

Definition Classes
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def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
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Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
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def hashCode(): Int

Definition Classes
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final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def let[U](value: T)(f: ⇒ U): U

Execute a block with a specific Local value, restoring the current state upon completion.
def letClear[U](f: ⇒ U): U

Execute a block with the Local cleared, restoring the current state upon completion.
final def ne(arg0: AnyRef): Boolean

Definition Classes
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final def notify(): Unit

Definition Classes
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final def notifyAll(): Unit

Definition Classes
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def set(optValue: Option[T]): Unit

Update the Local with a given optional value.
Update the Local with a given optional value.
General usage should be via let to avoid leaks.
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
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def update(value: T): Unit

Update the Local with a given value.
Update the Local with a given value.
General usage should be via let to avoid leaks.
final def wait(): Unit

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

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

Definition Classes
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Annotations
@throws( ... )

Related Docs: object Local | package util

final class Local[T] extends AnyRef

Instance Constructors

new Local()

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

def apply(): Option[T]

final def asInstanceOf[T0]: T0

def clear(): Unit

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

def let[U](value: T)(f: ⇒ U): U

def letClear[U](f: ⇒ U): U

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def set(optValue: Option[T]): Unit

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

def toString(): String

def update(value: T): Unit

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from AnyRef

Inherited from Any

Ungrouped