Figuring out syntax for Grand Central Dispatch in Swift

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I have the following code:

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)) {

    // Do stuff in the backgroud

    dispatch_async(dispatch_get_main_queue()) {

        // Do stuff on the UI thread

    }
}

However it will not compile. The inner call to dispatch_async returns the following compile error:

Cannot invoke 'init' with an argument list of type '(dispatch_queue_t!, () -> () -> $T3)'

I can't seem to figure out how to write this so that it works like I used to be able to in Objective C. Thanks for any ideas!

asked 38 secs ago

Sparklellama

336

Figuring out syntax for Grand Central Dispatch in Swift