Question

方法

static List<Tuple<string, int>> F(string root, int rootLevel)
{
    List<Tuple<string, int>> result = new List<Tuple<string, int>>();

    foreach (var item in Directory.EnumerateDirectories(root))
    {
        try
        {
            result.Add(new Tuple<string, int>(item, rootLevel + 1));

            result.AddRange(F(item, rootLevel + 1));
        }
        catch (UnauthorizedAccessException ex)
        {
            string tried = "";
        }

    }

    return result;

}

然后在构造函数中使用它

var dirs = F(textBox3.Text, 0);
var deep = (from d in dirs
            orderby d.Item2 descending
            select d).FirstOrDefault().Item2;

Search_Engine se = new Search_Engine();
se.Run();

这种情况下的问题是se.Run();应该返回string[]。 dirs是List<Tuple<string, int>>

。

std::vector<std::string> strVect;
auto pushToVector = [strVect] () {
    strVect.push_back(std::string("Hi"));
};
pushToVector ();

Answer 1

你可以这样做：

var dirs = F(textBox3.Text, 0);

Search_Engine se = new Search_Engine();
se.Run(dirs.Select(item => item.Item1).ToArray());

Answer 2

您可以自己轻松完成，例如：

var length = dirs.Count();
string[] array = new string[length];
for(int i = 0; i < length; i++)
{
  array[i] = dirs[i].Item1;
}
//array is now what you want

如何转换List <tuple <string，int =“”>＆gt;字符串[]？

2 个答案: