You can already do something pretty close to what you want:
enum Barcode {
case UPCA(numberSystem: Int, manufacturer: Int, product: Int, check: Int)
case QRCode(productCode: String)
}
var productBarcode = Barcode.UPCA(numberSystem: 8, manufacturer: 85909,
product: 51226, check: 3)
switch productBarcode {
case .UPCA(let p):
print("UPC-A: \(p.numberSystem), \(p.manufacturer), \(p.product),
\(p.check).")
case .QRCode(let p):
print("QR code: \(p.productCode).")
}
(Note that you need to label the tuple elements, or use p.0, p.1, etc.)
> On May 18, 2016, at 8:28 PM, Eduardo Mourey Lopez Ne via swift-evolution
> <[email protected]> wrote:
>
> Hi
>
> I will like to make the proposal to allow a switch let, similar to a if let,
> this will avoid having to repeat every variable name
>
> enum Barcode {
> case UPCA(Int, Int, Int, Int)
> case QRCode(String)
> }
> var productBarcode = Barcode.UPCA(8, 85909, 51226, 3)
>
> //current:
> switch productBarcode {
> case .UPCA(let numberSystem, let manufacturer, let product, let check):
> print("UPC-A: \(numberSystem), \(manufacturer), \(product), \(check).")
> case .QRCode(let productCode):
> print("QR code: \(productCode).")
> }
> //suggestion:
> switch let p = productBarcode {
> case .UPCA:
> print("UPC-A: \(p.numberSystem), \(p.manufacturer), \(p.product),
> \(p.check).")
> case .QRCode:
> print("QR code: \(p.productCode).")
> }
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