CrowdControl/Assets/Feel/MMTools/Tools/MMExtensions/MMDictionaryExtensions.cs

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

namespace MoreMountains.Tools
{
	/// <summary>
	/// Dictionary extensions
	/// </summary>
	public static class MMDictionaryExtensions
	{
		/// <summary>
		/// Finds a key (if there's one) that matches the value set in parameters
		/// </summary>
		/// <typeparam name="T"></typeparam>
		/// <typeparam name="W"></typeparam>
		/// <param name="dictionary"></param>
		/// <param name="value"></param>
		/// <returns></returns>
		public static T KeyByValue<T, W>(this Dictionary<T, W> dictionary, T value)
		{
			T key = default;
			foreach (KeyValuePair<T, W> pair in dictionary)
			{
				if (pair.Value.Equals(value))
				{
					key = pair.Key;
					break;
				}
			}
			return key;
		}
	}
}