Interactions with Symbols

[robpalme]

Assuming we want const values to allow efficient cloning across process boundaries, we need to define serialization. How will Symbols be handled in this case?

[rricard]

Same goes with JSON conversion

[bmeck]

Are all symbols expected to be supported? Or only reproducible ones like those using Symbol.forKey and well known Symbols? I think non-reproducable symbols would be odd to add to records themselves personally.

Per JSON, does this need to be serialized via JSON? Symbols are a type that don't serialize already, as is the case for other types.

[mheiber]

Discussed with @rricard and @rickbutton on Friday.

I suggest that lossless JSON roundtripping be added as a goal to this proposal, which would mean that symbols would not be allowed as keys or values in Records or as entries in Tuples.

I couldn't think of a use case for symbols on immutable data structures, so symbols don't seem like a big thing to give up.

PR: #42

[kleinfreund]

What about Symbol.iterator/iteration protocols?