Interesting: Scala 2.13's singleton types seem to be preserved in string/int addition.pic.twitter.com/o70LU6Avio
That's not new, though. It certainly worked in Scala 2.10, and probably all the way back to 2.0...
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(I don't have a pre-Java-8 JVM lying around any more, so I can't test before 2.10...)
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whaat, isn't the JVM supposed to be able to run code compiled for older versions?
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Maybe, but we weren't able to annotate literal singleton types that easily!
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It's even easier. You don't even need to know their singleton type!pic.twitter.com/2Hx08iNoOl
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