ios – Swari 1.2中的Variadic @ autoclosure？

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量的自动爆破？

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：???

解决方法

我打开了rdar：// 19782845,“Swift 1.2：不再支持Variadic自动关闭”,并得到了Apple Developer Relations的以下回复：

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.