[swift-users] Which is the more idiomatic approach for pinning down the type of a generic parameter?

[Marco Masser]

> On 2016-01-20, at 13:23, zhaoxin肇鑫 <owenzx at gmail.com> wrote:
> 
> Then I think the function with NSButton.self is the best. It makes least efforts for a programmer to get no mistakes.


OK, thank you for your thoughts on this!


I thought I’d mention that I got the idea for dropping the type parameter and shifting that to the caller by reading a blog post by Guille Gonzalez:
https://medium.com/@gonzalezreal/ios-cell-registration-reusing-with-swift-protocol-extensions-and-generics-c5ac4fb5b75e <https://medium.com/@gonzalezreal/ios-cell-registration-reusing-with-swift-protocol-extensions-and-generics-c5ac4fb5b75e>

The very last code snippet in that blog post does exactly that:

let cell: BookCell = collectionView.dequeueReusableCell(forIndexPath: indexPath)
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