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Scala 3
3.7.4
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Copyright (c) 2002-2025, LAMP/EPFL
Scala 3/scala/Proxy

Proxy

scala.Proxy
See theProxy companion object
traitProxy

This class implements a simple proxy that forwards all calls to the public, non-final methods defined in classAny to another object self. Those methods are:

def hashCode(): Intdef equals(other: Any): Booleandef toString(): String

Note: forwarding methods in this way will most likely create an asymmetric equals method, which is not generally recommended.

Attributes

Companion
object
Deprecated
[Since version 2.13.0]Explicitly override hashCode, equals and toString instead.
Source
Proxy.scala
Graph
Supertypes
classAny
Known subtypes
classSoftReference[T]
classWeakReference[T]
traitTyped[T]
traitOrderedProxy[T]
classRichFloat
classRichInt
traitIntegralProxy[T]
classRichChar
classRichLong
classRichByte
classRichShort
traitRangedProxy[T]
Show all

Members list

Value members

Abstract methods

Attributes

Source
Proxy.scala

Concrete methods

overridedefequals(that:Any):Boolean

Compares the receiver object (this) with the argument object (that) for equivalence.

Compares the receiver object (this) with the argument object (that) for equivalence.

Any implementation of this method should be anequivalence relation:

- It is reflexive: for any instancex of typeAny,x.equals(x) should returntrue. - It is symmetric: for any instancesx andy of typeAny,x.equals(y) should returntrue if and only ify.equals(x) returnstrue. - It is transitive: for any instancesx,y, andz of typeAny ifx.equals(y) returnstrue andy.equals(z) returnstrue, thenx.equals(z) should returntrue.

If you override this method, you should verify that your implementation remains an equivalence relation. Additionally, when overriding this method it is usually necessary to overridehashCode to ensure that objects which are "equal" (o1.equals(o2) returnstrue) hash to the samescala.Int. (o1.hashCode.equals(o2.hashCode)).

Value parameters

that

the object to compare against this object for equality.

Attributes

Returns

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

Definition Classes
Source
Proxy.scala
overridedefhashCode:Int

Calculates a hash code value for the object.

Calculates a hash code value for the object.

The default hashing algorithm is platform dependent.

Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet not be equal (o1.equals(o2) returnsfalse). A degenerate implementation could always return0. However, it is required that if two objects are equal (o1.equals(o2) returnstrue) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure to verify that the behavior is consistent with theequals method.

Attributes

Returns

the hash code value for this object.

Definition Classes
Source
Proxy.scala
overridedeftoString:String

Returns a string representation of the object.

Returns a string representation of the object.

The default representation is platform dependent.

Attributes

Returns

a string representation of the object.

Definition Classes
Source
Proxy.scala
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Copyright (c) 2002-2025, LAMP/EPFL
Copyright (c) 2002-2025, LAMP/EPFL

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