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2017-01-16
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@sova Those say you have a nil value where a non-nil value is expected.
@seancorfield Thank you Sean. So it's not about implementing :on-close but it's a nil hanging out someplace?
Yeah, you’re passing nil
where it expects a non-`nil` value. With protocols, you get a “not implemented” message rather than a NPE.
Oh, thanks a lot, that's very good to know! 🙂
Helps me track it down a bit better.