swift - CLLocationCoordinate2D 无法实例化

Question

我正在尝试从我从文件中读取的数据创建一些“CLLocation”。第一步是实例化一个“CLLocationCoordinate2D”以输入到 CLLocation 的初始值设定项中。我正在 Playground 中尝试我的想法，这段非常简单的代码生成了一个运行时错误:

import CoreLocation

let lat = 48.8
let lon = -122.3
let point2D = CLLocationCoordinate2D(latitude: lat, longitude: lon)

错误信息是

error: Execution was interrupted, reason: signal SIGABRT.
The process has been left at the point where it was interrupted, use "thread return -x" to return to the state before expression evaluation.

我对 Swift 编程很陌生，我不知道该怎么做。例如，我如何“使用”thread return -x“”来做任何事情
谁能告诉我这里发生了什么？
I've tried to attach a picture of the whole playground but can't tell if that is possible

Answer 1

刚刚发生在我身上。尝试更换 import CoreLocation与 import MapKit这在我的情况下有效。