[swift-evolution] await keyword "scope"

[Brent Royal-Gordon]

> On Sep 12, 2017, at 12:48 PM, Adam Kemp via swift-evolution <swift-evolution at swift.org> wrote:
> 
> @IBAction func buttonDidClick(sender:AnyObject) {
>     beginAsync {
>         let image = await processImage(downloadImage(), resize: self.resizeSwitch.isOn)
>         displayImage(image)
>     }
> }

Would it be possible to actually fix this? That is, make the code covered by the `await` evaluate synchronous subexpressions first, such that the code sample above is equivalent to this?

	@IBAction func buttonDidClick(sender:AnyObject) {
	    beginAsync {
		let $temp1 = self.resizeSwitch.isOn
		let $temp2 = await downloadImage()
	        let image = await processImage($temp2, resize: $temp1)
	        displayImage(image)
	    }
	}

-- 
Brent Royal-Gordon
Architechies

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