Re: [swift-users] question on generics
> On Feb 22, 2017, at 4:23 PM, David Sweeris via swift-users
> wrote:
>
>
>> On Feb 22, 2017, at 16:08, Dave Reed via swift-users
>> wrote:
>>
>> I suspect this can't be done (at least not right now), but wanted to check.
>>
>> I'd like to declare a class as a generic that meets a protocol and is also a
>> subclass of some specific type.
>>
>> Something like class Foo (i.e., the T must
>> be both a NSManagedObject or subclass of it and conform to SomeProtocol).
>>
>> Is this possible?
>
> Yep
> class Foo where T: SomeProtocol {...}
> should work fine (although I'm not in front of my computer to double check)
Also this might be more readable,
class Foo where T : NSManagedObject, T : SomeProtocol { … }
Slava
>
> - Dave Sweeris
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Re: [swift-users] question on generics
Cool thanks Kevin and David - I'll give it a try.
> On Feb 22, 2017, at 7:20 PM, Kevin Nattinger wrote:
>
> This seems to work in a playground:
>
> import CoreData
>
> protocol SomeProtocol {}
> class Foo where T: SomeProtocol {}
>
>> On Feb 22, 2017, at 4:08 PM, Dave Reed via swift-users
>> wrote:
>>
>> I suspect this can't be done (at least not right now), but wanted to check.
>>
>> I'd like to declare a class as a generic that meets a protocol and is also a
>> subclass of some specific type.
>>
>> Something like class Foo (i.e., the T must
>> be both a NSManagedObject or subclass of it and conform to SomeProtocol).
>>
>> Is this possible?
>>
>> Thanks,
>> Dave Reed
>>
>> ___
>> swift-users mailing list
>> swift-users@swift.org
>> https://lists.swift.org/mailman/listinfo/swift-users
>
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Re: [swift-users] question on generics
> On Feb 22, 2017, at 16:08, Dave Reed via swift-users
> wrote:
>
> I suspect this can't be done (at least not right now), but wanted to check.
>
> I'd like to declare a class as a generic that meets a protocol and is also a
> subclass of some specific type.
>
> Something like class Foo (i.e., the T must
> be both a NSManagedObject or subclass of it and conform to SomeProtocol).
>
> Is this possible?
Yep
class Foo where T: SomeProtocol {...}
should work fine (although I'm not in front of my computer to double check)
- Dave Sweeris
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Re: [swift-users] question on generics
This seems to work in a playground:
import CoreData
protocol SomeProtocol {}
class Foo where T: SomeProtocol {}
> On Feb 22, 2017, at 4:08 PM, Dave Reed via swift-users
> wrote:
>
> I suspect this can't be done (at least not right now), but wanted to check.
>
> I'd like to declare a class as a generic that meets a protocol and is also a
> subclass of some specific type.
>
> Something like class Foo (i.e., the T must
> be both a NSManagedObject or subclass of it and conform to SomeProtocol).
>
> Is this possible?
>
> Thanks,
> Dave Reed
>
> ___
> swift-users mailing list
> swift-users@swift.org
> https://lists.swift.org/mailman/listinfo/swift-users
___
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[swift-users] question on generics
I suspect this can't be done (at least not right now), but wanted to check. I'd like to declare a class as a generic that meets a protocol and is also a subclass of some specific type. Something like class Foo (i.e., the T must be both a NSManagedObject or subclass of it and conform to SomeProtocol). Is this possible? Thanks, Dave Reed ___ swift-users mailing list swift-users@swift.org https://lists.swift.org/mailman/listinfo/swift-users
