C# 等效于 C++ map<string,double>

Question

我想为不同的帐户保留一些总数。在 C++ 中，我会像这样使用 STL:

map<string,double> accounts;

// Add some amounts to some accounts.
accounts["Fred"] += 4.56;
accounts["George"] += 1.00;
accounts["Fred"] += 1.00;

cout << "Fred owes me $" << accounts['Fred'] << endl;

现在，我如何在 C# 中做同样的事情？

Answer 1

大致:-

var accounts = new Dictionary<string, double>();

// Initialise to zero...

accounts["Fred"] = 0;
accounts["George"] = 0;
accounts["Fred"] = 0;

// Add cash.
accounts["Fred"] += 4.56;
accounts["George"] += 1.00;
accounts["Fred"] += 1.00;

Console.WriteLine("Fred owes me ${0}", accounts["Fred"]);