CODEWITHSUNDEEP
c#genericsdictionary
Miguel
Miguel

Reputation: 3496

Injective Dictionary in .NET

Good morning, afternoon or night,

Is there anything like an injective Dictionary in .NET, or at least any way I can force a Dictionary to define an injective mapping?

Thank you very much.

Upvotes: 0

Views: 211

Answers (1)

Tokk
Tokk

Reputation: 4502

You can use it like this 

    public class InjectiveDictionary<T, V> : Dictionary<T, V>
    {
        public new void Add(T key, V value)
        {
            if (this.ContainsValue(value))
            {
                throw new Exception("value already used");
            }
            base.Add(key, value);
        }


    public InjectiveDictionary(Dictionary<T, V> dict)
    {
        foreach (var entry in dict)
        {
            this.Add(entry.Key, entry.Value);
        }
    }

    public InjectiveDictionary()
    {
    }
}

Upvotes: 1

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