[swift-users] Swift 3 equivalent of dispatch_barrier_async

[Daniel Dunbar]

The new spelling is:

queue.async(flags: .barrier) { ... }

 - Daniel

> On Jun 28, 2016, at 12:24 PM, Eric Miller via swift-users <swift-users at swift.org> wrote:
> 
> I tried searching github's swift-evolution for "dispatch_barrier_async", but don't see a mention of it.
> 
> Can I migrate this directly to swift 3, or do I need a larger refactor involving serial queues?
> 
> ```swift
> 
> let myConcurrentQueue = DispatchQueue(label: "concurrentQ", attributes: .concurrent)
> dispatch_barrier_async(myConcurrentQueue) { ... }
> 
> ```
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