[swift-evolution] Small Enhancement Request for Swift Protocol

[Matthew Johnson]

Sent from my iPad

> On May 17, 2016, at 1:10 PM, Andrew Trick via swift-evolution <swift-evolution at swift.org> wrote:
> 
> 
>> On May 14, 2016, at 7:49 AM, Sreejith K R via swift-evolution <swift-evolution at swift.org> wrote:
>> 
>> Hello All,
>> 
>> 
>> I would like to suggest an enhancement for the swift protocol would really like this feature to be reviewed.
>> 
>> Enhancement Description : 
>> 
>> Currently it is not possible to invoke  the default implementation of a particular protocol (EG: SampleProtocolParent achieved using protocol extension)  inside   another protocol extention(Eg: SampleProtocolSub) that inherits from the former protocol. Please look  into the SampleProtocolSub extension as shown below. Also the same behavior is observed  while a class implements the protocol(Please look  into the Test class that implements SampleProtocolSub as shown below ). 
>> 
>> This behavior is something similar to the usage of super keyword while overriding a method. 
>> 
>> protocol SampleProtocolParent{
>>    func testFunction();
>> 
>> }
>> extension SampleProtocolParent{
>>    func testFunction(){
>>            print("hello my super implementation")
>>    }
>> 
>> }
>> protocol SampleProtocolSub:SampleProtocolParent{
>> 
>> 
>> }
>> 
>> extension SampleProtocolSub{
>>    func testFunction(){
>>       /* need to call testFunction implementation of the parent SampleProtocolParent as well here. Is this a possible feature  ?*/
>>        print("hello my current and new implementation")
>>    }
>> 
>> }
>> 
>> class Test:SampleProtocolSub{
>>    func testFunction(){
>> 
>>        /* need to call testFunction implmentaion of the parent SampleProtocolParent as well here. Is this a possible feature  ?*/
>>        print("hello my current and new new new implementaion")
>>    }
>> }
> 
> I also want this feature, but haven’t seen any proposed syntax.
> -Andy

How about this (now that we are uncurrying the self parameter):

SampleProtocolParent.testFunction(self)

It's not pretty but it is clear.

> 
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