object Token extends Serializable
- Source
- Token.scala
- Alphabetic
- By Inheritance
- Token
- Serializable
- Serializable
- AnyRef
- Any
- Hide All
- Show All
- Public
- All
Value Members
-
final
def
!=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
-
final
def
##(): Int
- Definition Classes
- AnyRef → Any
-
final
def
==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
-
def
apply[F[_]](implicit arg0: Target[F]): F[Token]
Token provides uniqueness by relying on object equality, which means that
new Token
is actually a side-effect in this case.Token provides uniqueness by relying on object equality, which means that
new Token
is actually a side-effect in this case.We want to make sure we preserve referential transparency when using tokens, but imposing a
Sync
bound is not desirable here, since it forces a very strong constraint on user code for something that is not only an internal implementation detail, but also has zero impact on meaningful behaviour for the user, unlike for example internal concurrency.Furthermore, token creation has the following properties: - it's synchronous - it's infallible - it's not created in contexts that affect stack safety such as iteration
Given all these reasons, we suspend it via
flatMap
instead of usingSync[F].delay
. Do not try this at home.Note: The
Compiler.Target
bound only resolves ifF
has an instance ofSync
orConcurrent
, meaning thatflatMap
is guaranteed to suspend. -
final
def
asInstanceOf[T0]: T0
- Definition Classes
- Any
-
def
clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( ... ) @native() @HotSpotIntrinsicCandidate()
-
final
def
eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
-
def
equals(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
-
final
def
getClass(): Class[_]
- Definition Classes
- AnyRef → Any
- Annotations
- @native() @HotSpotIntrinsicCandidate()
-
def
hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native() @HotSpotIntrinsicCandidate()
-
final
def
isInstanceOf[T0]: Boolean
- Definition Classes
- Any
-
final
def
ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
-
final
def
notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @HotSpotIntrinsicCandidate()
-
final
def
notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @HotSpotIntrinsicCandidate()
-
final
def
synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
-
def
toString(): String
- Definition Classes
- AnyRef → Any
-
final
def
wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... ) @native()
-
final
def
wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
Deprecated Value Members
-
def
finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( classOf[java.lang.Throwable] ) @Deprecated @deprecated
- Deprecated
(Since version ) see corresponding Javadoc for more information.