Scala reference equality

How do you test reference equality in Scala?

开发者_如何转开发

val x = new Obj
val y = x
x.referenceEquals(y) // evaluates to true

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The function you are looking for is eq, which is a member of AnyRef:

val x = new Obj
val y = x
x eq y // evaluates to true
x ne y // evaluates to false