Question

I’m using a unordered map pointer because of C++/Cli on Visual Studio 2008 (Using Windows Forms Application), but I can’t assign a value to it, it throws an error, as my code example is showing

 //...
    public ref class Login: public System::Windows::Forms::Form
{
public:

    unordered_map< std::string, std::string >* Accounts;

    Test(void)
    {
        this->Accounts = new unordered_map<std::string, std::string>();
        this->Accounts["hello"] = "test"; // The Error is in this line, this is the line 37
        cout << this->Accounts["hello"];
        InitializeComponent();
        //
        //TODO: Add the constructor code here
        //


    }
    //...

Error given:

Error 4 error C2107: illegal index, indirection not allowed
C:\Projects\Test\Login.h 37

I hope my code was clear enough so you can visualize it.

Thanks in advance.

Answer 1

Accounts is a pointer, you need to dereference it:

(*this->Accounts)["hello"] = "test";
cout << (*this->Accounts)["hello"];