Question

我试图让用户能够查看表格视图中的某些项目，我实际上已经弄明白了但是我有错误：

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath:



    NSIndexPath!) {



        tableView.deselectRowAtIndexPath(indexPath, animated: false)



      #  var tappedItem: AssesmentsManager = taskMgr.tasks[indexPath.row] as



        AssesmentsManager


      #  tappedItem.send = !tappedItem.send



        tableView.reloadData()



}

它说任务不能转换为AssesmentMAnager 和 AssesmentManager没有一个名为completed 的成员。

这是类 AssesmentManager.swift ：

import UIKit

var taskMgr : AssesmentsManager = AssesmentsManager()

struct task {
    var name = "Un-Named"
    var score = "No-Score"
    var send = false
}

class AssesmentsManager: NSObject {

    var tasks = [task]()

    func addtask(name: String, score: String, send: Bool) {

        tasks.append(task(name: name, score: score, send: send))

    }


}

Answer 1

您必须将完成的bool变量添加到任务结构

#include <iostream>                          
#include <string>                           
#include <vector>

using namespace std;                        

// The program needs to input an integer like 2341, then sum it as 2+3+4+1 + 10
// I am in putting an integer and will pass it to a funtion by &.
int main()
{
    string strNumber;
    int intNumber = 0;

    cout << "Enter your number: ";
    cin >> intNumber;

    // programming the logic for sumTotal(& intNumber) function before creating 

    strNumber = to_string(intNumber);
    cout << "Your number is: " << strNumber << endl;
    cout << "Your numbers length: " << strNumber.length() << " digits" << endl;

    // here I need to convert the string array to an integer array
    for (int i = 0; i < strNumber.length(); ++i){
        intNumber[&i] = strNumber[i] - '0';
        cout << "Element [" << i << "] contains: " << strNumber[i] << endl;
    }

    // next a recursive function must sum the integer array
    // I am taking an online course and cant afford a tutor please help!


    system("pause");                                            
    return 0;

}

尝试直接编辑值

struct task {
    var name = "Un-Named"
    var score = "No-Score"
    var send = false
}
class AssesmentsManager: NSObject {

    var tasks = [task]()

    func addtask(name: String, score: String, send : Bool) {

        tasks.append(task(name: name, score: score, send: send))

    }
}

Answer 2

错误告诉您已完成的名称method or function or property。因此，在 AssesmentsManager 类中，您需要实现一个

尝试声明tappedItem时出错

2 个答案: