Re: Swift DispatchQueue docs?

[Wim Lewis]

On Nov 21, 2016, at 1:48 PM, Rick Mann  wrote:
> Is there a way to look at the C header files for GCD? I tried opening 
> Dispatch.h, and Xcode is stuck "Generating Interface…", presumably a Swift 
> interface I don't want to see.

I've found that if I tell Xcode to open Foo.h, and Xcode gets stuck generating 
a nonexistent interface like that, opening Foo.h *again* while looking at the 
empty "Generating Interface…" or "No editor" pane will cause Xcode to actually 
open Foo.h.

> They seem pretty terrible. No explanation of any of the things.

I haven't found a universal way to discover how a given API is mapped into 
Swift except by getting Xcode's code-completion to suggest names for me. It is 
pretty terrible.

In some cases you can find a proposal for the API on swift-evolution and use it 
as documentation:

https://github.com/apple/swift-evolution/blob/master/proposals/0088-libdispatch-for-swift3.md
 



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Re: Swift DispatchQueue docs?

[Rick Mann]

Hmm. If you scroll down in the generated Swift interface file, you get a bunch 
of block comments from the C version. Sigh.

> On Nov 21, 2016, at 13:48 , Rick Mann  wrote:
> 
> They seem pretty terrible. No explanation of any of the things.
> 
> The GCD guide from Apple is very old, with out-of-date info, and lacking info 
> on the newer things (AFAICT).
> 
> Is there a way to look at the C header files for GCD? I tried opening 
> Dispatch.h, and Xcode is stuck "Generating Interface…", presumably a Swift 
> interface I don't want to see.
> 
> -- 
> Rick Mann
> rm...@latencyzero.com
> 
> 
> 
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-- 
Rick Mann
rm...@latencyzero.com



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