Sent from my iPad

> On Apr 28, 2016, at 5:49 PM, Erica Sadun <[email protected]> wrote:
> 
> 
>> On Apr 28, 2016, at 12:18 PM, Matthew Johnson <[email protected]> wrote:
>> We can't add the keywords if the structs are defined in a module we import 
>> but don't own.  We are only declaring the conformance retroactively.  The 
>> ability to do this is a crucial aspect of generic programming.  It isn't yet 
>> clear how your proposal handles retroactive modeling.
> 
> These are compile-time checks and should not affect compiled code.

Does that mean the conformance declaration will be accepted by the compiler 
under your proposal?  I would really like to see this called out explicitly in 
the proposal.

> 
> -- E
> 
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