BidirectionalDictionary 1.2.0

BidirectionalDictionary

The bidirectional dictionary is a dictionary with non-null unique values that provides access to an inverse dictionary.

Example

using System.Collections.Generic;

var countryCapitalDictionary = new BidirectionalDictionary<string, string>()
{
    ["Italy"] = "Rome",
    ["India"] = "Mumbai",
    ["USA"]   = "Washington, D.C.",
};

var capital = countryCapitalDictionary["Italy"]; // "Rome"
var country = countryCapitalDictionary.Inverse["Rome"]; // "Italy"

Also, you can create a read-only instance of a bidirectional dictionary:

var readOnlyDictionary = countryCapitalDictionary.AsReadOnly(); // ReadOnlyBidirectionalDictionary<string, string>

License

BidirectionalDictionary is licensed under the MIT license.