class WeakRef[+T] extends Object
ECMAScript 2021
A WeakRef object lets you hold a weak reference to another object, without preventing that object from getting garbage-collected.
MDN
- T
unconstrained, but the constructor will throw a TypeError if targetObject is not an Object.
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Instance Constructors
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new
WeakRef(targetObject: T)
- targetObject
An object whose weak reference contained by an instance of WeakRef.
Value Members
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final
def
!=(arg0: scala.Any): Boolean
- Definition Classes
- AnyRef → Any
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final
def
##(): Int
- Definition Classes
- AnyRef → Any
- def +(other: String): String
- def ->[B](y: B): (WeakRef[T], B)
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final
def
==(arg0: scala.Any): Boolean
- Definition Classes
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final
def
asInstanceOf[T0]: T0
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def
clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( ... ) @native()
-
def
deref[S >: T](): UndefOr[S]
The target object of the WeakRef, or undefined if the object has been garbage-collected.
- def ensuring(cond: (WeakRef[T]) ⇒ Boolean, msg: ⇒ scala.Any): WeakRef[T]
- def ensuring(cond: (WeakRef[T]) ⇒ Boolean): WeakRef[T]
- def ensuring(cond: Boolean, msg: ⇒ scala.Any): WeakRef[T]
- def ensuring(cond: Boolean): WeakRef[T]
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final
def
eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
-
def
equals(arg0: scala.Any): Boolean
- Definition Classes
- AnyRef → Any
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def
finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
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- @throws( classOf[java.lang.Throwable] )
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final
def
getClass(): Class[_]
- Definition Classes
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- Annotations
- @native()
-
def
hasOwnProperty(v: String): Boolean
Tests whether this object has the specified property as a direct property.
Tests whether this object has the specified property as a direct property.
Unlike js.Object.hasProperty, this method does not check down the object's prototype chain.
MDN
- Definition Classes
- Object
-
def
hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
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final
def
isInstanceOf[T0]: Boolean
- Definition Classes
- Any
-
def
isPrototypeOf(v: Object): Boolean
Tests whether this object is in the prototype chain of another object.
Tests whether this object is in the prototype chain of another object.
- Definition Classes
- Object
-
final
def
ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
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final
def
notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
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final
def
notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
-
def
propertyIsEnumerable(v: String): Boolean
Tests whether the specified property in an object can be enumerated by a call to js.Object.properties, with the exception of properties inherited through the prototype chain.
Tests whether the specified property in an object can be enumerated by a call to js.Object.properties, with the exception of properties inherited through the prototype chain.
If the object does not have the specified property, this method returns false.
MDN
- Definition Classes
- Object
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final
def
synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
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def
toLocaleString(): String
- Definition Classes
- Object
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def
toString(): String
- Definition Classes
- AnyRef → Any
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def
valueOf(): scala.Any
- Definition Classes
- Object
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final
def
wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
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final
def
wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
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final
def
wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... ) @native()
- def →[B](y: B): (WeakRef[T], B)
Deprecated Value Members
-
def
formatted(fmtstr: String): String
- Implicit
- This member is added by an implicit conversion from WeakRef[T] to StringFormat[WeakRef[T]] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @deprecated @inline()
- Deprecated
(Since version 2.12.16) Use
formatString.format(value)instead ofvalue.formatted(formatString), or use thef""string interpolator. In Java 15 and later,formattedresolves to the new method in String which has reversed parameters.