Hi, Kévin. This sort of post is more appropriate for the swift-evolution list,
and indeed there's already a bit of discussion around this. I suggest you look
through the archives
<https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20151207/thread.html>
to see what you need to add.
Jordan
> On Dec 10, 2015, at 1:07, Kévin Machado via swift-dev <swift-dev@swift.org>
> wrote:
>
> Dear colleagues,
>
> In swift we are able to add extension of classes that allows us to add
> methods but we cannot add attributes, properties. C# language allows
> developers to make its classes partial. It is possible to split the
> definition of class, struct or interface over two or more source files.
>
> Could we make swift able to do this stuff ?
> Are you interested about this kind of feature ?
> Proposed solution
>
> Add partial keyword to alert the compiler that this class is splited over one
> or more source files.
>
> Example
>
> // Common logic for bank model
> partial class Bank {
>
> var amount: Int
>
> init() {
> amount = 0
> super.init()
> }
>
> func withdraw(amount amount: Int) {
> self.amount -= amount
> }
>
> }
>
> // Business logic for customer within bank model
> partial class Bank {
>
> unowned let owner: Customer
>
> init(customer: Customer) {
> self.owner = customer
> }
>
> func notifyCustomer() {
> // some code
> }
>
> }
>
> <https://github.com/djnivek/swift-evolution/blob/56929274a31ff58295841a74a1eb2ace9db3e428/proposals/0008-makes-swift-class-struct-definitions-partial.md#alternative-solution>Alternative
> solution
>
> We also could add more feature with the extension paradigm. Adding
> properties, attributes and more directly on the extension scope.
>
> _______________________________________________
> swift-dev mailing list
> swift-dev@swift.org
> https://lists.swift.org/mailman/listinfo/swift-dev
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