In Java the AtomicReference class has a "compareAndSet(V expect, V update)" method. Sometimes I wish Scala's "asInstanceOf" had an "expected" type parameter too, to be a bit more type-safe when casting.
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Yes, correct. But standard in the language. :D
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Not quite. Because we're trying to ascertain that the value with inferred type A is of the expected type Expect, before casting it to T, for which we have no type information. But I'd forgotten about that apply!
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