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Alex Rivera
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I wonder how much different these funcionality would look like (and how different the implementation would be), if Scala wouldn't (have to) follow Java's java.io.Serializable / java.lang.Cloneable (mostly to stay compatible with Java and the tools/ecosystem around it). Because Scala is more simpler in language design, but enables more powerful implementation and abstraction possibilities, it is thinkable that Scala might take a different path compared to Java, if it wouldn't have to shoulder the Java-compatibility-burden. I could imagine that a idiomatic implementation would use type classes or traits with (possibly) private fields/methods (not possible in Java interfaces?), maybe carrying some standard implementation? Or are marker interfaces still the right choice in Scala?
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