检查对象是否为Swift中给定的泛型类型

我在navigationController中有一个ViewController数组，我需要找到特定的vc并调用popToViewController方法。但是类型检查总是失败

如何在Swift中检查vc是否属于给定类型

func popToViewController<T>(vcClass: T.Type, animated: Bool) {
        guard let mainVc = self.rootController else {
            return
        }

        let controllers = mainVc.viewControllers
        for vc in controllers {
            if vc is T  {   // always is false 
                _ = mainVc.popToViewController(vc , animated: true)
            }
        }
}

试试这个：

if type(of: vc) == T.self {
    _ = mainVc.popToViewController(vc , animated: true)
}

或者，如果您想检查可转换到

T

中的

vc

：

if let _ = vc as? T {
    _ = mainVc.popToViewController(vc , animated: true)
}

if let _ = vc as? T {
    _ = mainVc.popToViewController(vc , animated: true)
}