[swift-users] How to resolve "type(of: instance)" being shadowed by "instance.type"?

Slava Pestov spestov at apple.com
Sat Sep 23 00:10:59 CDT 2017

> On Sep 22, 2017, at 10:10 PM, Glen Huang via swift-users <swift-users at swift.org> wrote:
> I have a class like this:
> class File {
>   type: FileType
>   url: URL
>   func fetch(from server: Server) {
>       type(of: server).get(from: url)
>   }
> }
> However, it fails to compile with "Cannot call value of non-function type ‘File’” inside the body of fetch(from:). I believe the reason is that self.type shadows  type(of: server).
> Other than renaming the “type” property, is there any other way to work around it? I tried "Foundation.type(of: server)” and found out that it’s from the standard library and not Foundation. Is there a prefix that denotes the standard library?

The standard library module is named ‘Swift’, so ‘Swift.type(of:)’ should do the trick.

> A more general question, since this is clearly a function call, why would it be shadowed by self.type, which is clearly a property access?
> I’m using Swift 4 in Xcode 9.
> Regards,
> Glen
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