Compile error when encode a case class about circe

[travisbrown]

Thanks for the report! I'm at a conference today but I'll take a look this evening.

[djx314]

Oh, I forgot it, when decode a case class like it provide above, it used to provide some Decoder of the class that defined in properties sometimes(Just sometimes and I don't know when). It looks like the same as the json encode problem above.

[alexarchambault]

@travisbrown I tried to port my latest developments from argonaut-shapeless here, see https://github.com/alexarchambault/circe/commits/topic/generic. These seem to fix this issue, but rely on new developments in shapeless (milessabin/shapeless#435), not merged in mainline yet.

I've been trying to fix it without overhauling the generic module, without success (fixing it was breaking other things), but hopefully you'll have more luck than me at this.

I tried to use export-hook too, which didn't work either, but I haven't investigated much the problem.

[travisbrown]

Thanks, @alexarchambault! I'd like to spend a little bit of time understanding what's going on in your generic branch, and how it relates to export-hook, and since I'm at Scala by the Bay today that probably won't happen until tomorrow.

I've also just created #36 and #37 to highlight some issues related to ObjectEncoder and tuple instances, which I think complicates some things and simplifies others.

[travisbrown]

The error message situation is a little better after #43, but it doesn't fix this and the message still isn't great:

// Exiting paste mode, now interpreting.

<console>:38: error: could not find implicit value for parameter e: io.circe.Encoder[Bbbbb]
       kk.asJson
          ^