Cap'n Proto's as a Type System? Why in 2014 can it not get sum types just right? #StrangeLoop
.@KentonVarda cap'n'proto unions are not first class like structs. Still better than nothing as in Protocol Buffers. #StrangeLoop
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@fare That's by design, discussed in the docs: http://kentonv.github.io/capnproto/language.html#unions … (Scroll down slightly.) -
@fare BTW protobufs recently released 2.6.0 which actually has unions as well. Similar design.
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