> On Oct 26, 2016, at 10:14 AM, Max Desiatov <max.desia...@gmail.com> wrote:
> 
> Hi Tony,
> 
> This is very interesting caveat. Is there a plan to get this documented 
> anywhere? I haven't seen any documentation for Swift Foundation published 
> publicly anywhere akin to how it's done for other APIs at 
> https://developer.apple.com/reference/ 
> <https://developer.apple.com/reference/>.
> 
> With best regards, Max.

With respect to the NSObject requirement: It’s really more of a known issue 
than a permanent limitation.

To over summarize the situation: NSKeyedArchiver (the Objective-C one) puts a 
private category on NSObject and assumes all objects respond to those messages 
after that.

We don’t really have documentation for swift-corelibs-foundation beyond what we 
can put in our own headerdoc format there. That would be something I would 
really appreciate help on if anyone is interested in contributing.

- Tony

> 
>> On 26 Oct 2016, at 18:11, Tony Parker via swift-corelibs-dev 
>> <swift-corelibs-dev@swift.org <mailto:swift-corelibs-dev@swift.org>> wrote:
>> 
>> Hi Sai,
>> 
>> We do have basic support for keyed archiving and unarchiving in 
>> swift-corelibs-foundation on Linux. The limitation is that the NSCoding 
>> protocol cannot be applied to Swift struct types, only class types. On 
>> Darwin, the class also must be a subclass of NSObject. This last limitation 
>> may not exist on Linux, but you should be aware that if you encode a 
>> non-NSObject subclass on Linux then you would not be able to decode it on 
>> Darwin.
>> 
>> - Tony
>> 
>>> On Oct 26, 2016, at 4:07 AM, Sai Kanduri via swift-corelibs-dev 
>>> <swift-corelibs-dev@swift.org <mailto:swift-corelibs-dev@swift.org>> wrote:
>>> 
>>> Hi Tony,
>>>  
>>> From your comments on Pull Request #574 I understand that we cannot 
>>> archive/un-archive non-NS objects using  NsKeyedArchiver & 
>>> NSKeyedUnarchiver.I s my understanding correct ..? Does this means that 
>>> archiving and un-archiving of  swift types is  not supported on Linux  ?
>>>  
>>> -Sai Hema
>>> 
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