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

[Chris Lattner]

> 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.

-Chris


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.swift.org/pipermail/swift-evolution/attachments/20171212/932f592f/attachment.html>