[swift-evolution] [Pitch] Improve `init(repeating:count)`

Christopher Kornher ckornher at me.com
Thu Aug 17 10:40:05 CDT 2017

We might as well add the index to the call so elements can be created from other lists, etc.

 Array(repeatedlyCalling: { (index:Int) in MyView( forIndex:index ) }, count: 3) // This might by syntactically correct...

> On Aug 17, 2017, at 9:24 AM, Rob Mayoff via swift-evolution <swift-evolution at swift.org> wrote:
> On Thu, Aug 17, 2017 at 7:04 AM, Robert Bennett via swift-evolution <swift-evolution at swift.org <mailto:swift-evolution at swift.org>> wrote:
> Alternatively, instead of replacing the current definition with an autoclosure version, we could leave the current version in place and add a version taking a function. This could be especially useful when you’ve defined a function like `makeMySpecialKindOfButton() -> UIButton` that does a lot of customization to an object before returning it.
> Array(repeating: { return UIView() }, count: 3)
> and
> Array(repeating: makeMySpecialKindOfButton, count: 3)
> This is still source-breaking, because an array of closures is legal. We need a different name to avoid breaking source:
>     Array(repeatedlyCalling: { UIView() }, count: 3)
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