[swift-evolution] Proposal: Introduce User-defined "Dynamic Member Lookup" Types

Chris Lattner clattner at nondot.org
Tue Dec 12 14:42:20 CST 2017

> On Dec 12, 2017, at 9:26 AM, C. Keith Ray <keithray at mac.com> wrote:
> in https://gist.github.com/lattner/b016e1cf86c43732c8d82f90e5ae5438 <https://gist.github.com/lattner/b016e1cf86c43732c8d82f90e5ae5438>
> there is this statement:
> "For this reason, the compiler only permits conformance of this protocol on the original type definition, not extensions"
> and this example:
> extension JSON : DynamicMemberLookupProtocol {
> Contradictory?

Yes, thanks for catching that, I fixed the proposal to not describe these as extensions.

> Calling Java from C is done like the following, how would one do it in Swift using this proposal?

I’m not sure what your question is.  I’m not an expert in JNI interop.


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