ios - Swift 1.2 中的 Variadic @autoclosure？

Question

既然 @autoclosure 是参数声明的一部分而不是类型，那么如何声明函数采用可变数量的自动闭包？

之前:

public func coalesce<T>(all : @autoclosure () -> T? ...) -> T? {
    for f : () -> T? in all {
        if let x = f() { return x }
    }
    return nil
}

之后:???

Answer 1

我打开了 rdar://19782845，“Swift 1.2:Variadic auto-closures no longer supported”，Apple Developer Relations 给出了以下回复:

This issue behaves as intended based on the following:

@autoclosure is only allowed on parameters of function type, and varargs is an array. This is not expected to work.