[swift-evolution] [Concurrency] async/await + actors

[Thorsten Seitz]

> Am 21.08.2017 um 22:32 schrieb Brent Royal-Gordon via swift-evolution <swift-evolution at swift.org>:
> 
>> On Aug 21, 2017, at 12:41 PM, Wallacy via swift-evolution <swift-evolution at swift.org> wrote:
>> 
>> Based on these same concerns, how to do this using async/await ?
>> 
>> func process() -> Void) {
>>     loadWebResource("bigData.txt") { dataResource in
>> 	  //....
>>     }
>>     printf("BigData Scheduled to load")
>>     loadWebResource("smallData.txt") { dataResource in
>> 	  //....
>>     }
>>     printf("SmallData Scheduled to load")
>> 
>> }
> 
> 
> You would use something like the `Future` type mentioned in the proposal:
> 
> 	func process() {
> 		let bigDataFuture = Future { await loadWebResource("bigData.txt") }
> 		print("BigData scheduled to load")
> 		
> 		let smallDataFuture = Future { await loadWebResource("smallData.txt") }
> 		print("SmallData scheduled to load")
> 		
> 		let bigDataResource = await bigDataFuture.get()
> 		let smallDataResource = await smallDataFuture.get()
> 		// or whatever; you could probably chain off the futures to handle whichever happens first first.
> 		...
> 	}

Like others have already proposed I would imagine to be able to write something like this (adding a return type to do something with the data).

func process() async -> (Data, Data) {
    let bigData =  async loadWebResource("bigData.txt") 
    print("BigData scheduled to load")
    let bigData =  async loadWebResource("bigData.txt") 
    print("SmallData scheduled to load")
    return await (bigData, smallData)
}

where bigData and smallData have the type `async Data` which has 
to be `await`ed upon to get at the `Data`.

-Thorsten


> 
> -- 
> Brent Royal-Gordon
> Architechies
> 
> _______________________________________________
> swift-evolution mailing list
> swift-evolution at swift.org
> https://lists.swift.org/mailman/listinfo/swift-evolution
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.swift.org/pipermail/swift-evolution/attachments/20170911/bd4d6d9d/attachment.html>