swift - 如何使用 swift 为 sqlite 提供数据库路径

Question

我尝试下面的代码来创建数据库，但这在运行时返回我线程断点错误，接近让part1DbPath =“/用户/用户名/文档/”

import UIKit

class ViewController: UIViewController {
    let part1DbPath = "/Users/username/Documents/"

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
       // Dispose of any resources that can be recreated.
    }

    func openDatabase() -> COpaquePointer {
        var db: COpaquePointer = nil
        if sqlite3_open_v2(part1DbPath, &db, SQLITE_OPEN_CREATE  | SQLITE_OPEN_READWRITE, "") == SQLITE_OK {
            print("Successfully opened connection to database at \(part1DbPath)")
        return db
        } else {
            print("Unable to open database. Verify that you created the directory described " +
            "in the Getting Started section.")   
      }
    return db
    }
}

看起来我在声明数据库路径时出错了。这有什么问题吗？我该如何让它发挥作用？感谢您的帮助

Answer 1

您可以在代码中设置断点来停止执行。这不是一个错误，而是用于在代码运行时检查它。这称为“调试”并且非常有用。

您可以通过单击该行左侧的蓝色标记来删除断点，也可以选择使用“调试” View 继续执行(按“播放”按钮)。

如果调试 View 未打开，可以通过按 View 底部的小箭头将其打开。