[swift-evolution] [Review] SE-0026 Abstract classes and methods

Thorsten Seitz tseitz42 at icloud.com
Mon Feb 29 11:06:38 CST 2016

> Am 26.02.2016 um 22:51 schrieb plx via swift-evolution <swift-evolution at swift.org>:
> Abstract classes and access control issues would need to be addressed. EG: is the below allowed, or not:
> abstract public class ClassWithInternalAbstractMembers {
>   // abstract members less visible than the containing type:
>   internal abstract func someFunctionOnlyVisibleWithinThisModule()
>   private abstract func someFunctionOnlyVisibleWithinThisFile()
> }

Of course, why not? This allows template methods (protected would be even more nice for those) which is an important use case for abstract classes IMO.


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