I have defined a class myComplex. I need to map it to integers. In C++ I would have created a map as map<myComplex,int> first;

How to do such thing in C#?

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4 Answers

The equivalent would be class SortedDictionary<TKey, TValue> in the System.Collections.Generic namespace.

If you don't care about the order the class Dictionary<TKey, TValue> in the System.Collections.Generic namespace would probably be sufficient.

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std::map<Key, Value> → SortedDictionary<TKey, TValue>

std::unordered_map<Key, Value> → Dictionary<TKey, TValue>

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Take a look at the Dictionary class in System::Collections::Generic.

Dictionary<myComplex, int> myMap = new Dictionary<myComplex, int>();

.NET Framework provides many collection classes too. You can use Dictionary in C#. Please find the below msdn link for details and samples