> I really like the idea of having the anonymous unions/joins and > considering that the resulting type system should be a complete lattice > they sound manageable to me -- both for the compiler and the human > reader. Does anyone know reasons why no language seems to have this feature?
I'm not much of a PLTist, but I'm guessing the reason uions don't make it into general purpose, object oriented languages is that they're inherently structural. Just a guess though. (The alternative is having to check the runtime type and downcast, which pretty much defeats the purpose.) With kind regards Ben --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "The Java Posse" group. To post to this group, send email to javaposse@googlegroups.com To unsubscribe from this group, send email to javaposse+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/javaposse?hl=en -~----------~----~----~----~------~----~------~--~---
