List Extensions for Unity

ListExtensions.cs

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

public static class ListExtensions
{
	private static System.Random s_rand = new System.Random();
	public static T RandomElement<T>(this List<T> source)
	{
		if (source.Count == 0)
		{
			return default(T);
		}
		return source[ListExtensions.s_rand.Next(source.Count)];
	}
	public static float GetFloat(this List<object> list, int index, float defaultValue = 0f)
	{
		float result;
		try
		{
			result = ((index >= list.Count) ? defaultValue : ((float)Convert.ToDouble(list[index])));
		}
		catch (Exception ex)
		{
			Debug.LogWarning(string.Format("Fail to convert (key<{0}>, value<{1}>) to {2}. Error: {3}", new object[]
			{
				index,
				list[index],
				"float",
				ex.Message
			}));
			result = defaultValue;
		}
		return result;
	}
	public static int GetInt(this List<object> list, int index, int defaultValue = 0)
	{
		int result;
		try
		{
			result = ((index >= list.Count) ? defaultValue : Convert.ToInt32(list[index]));
		}
		catch (Exception ex)
		{
			Debug.LogWarning(string.Format("Fail to convert (key<{0}>, value<{1}>) to {2}. Error: {3}", new object[]
			{
				index,
				list[index],
				"int",
				ex.Message
			}));
			result = defaultValue;
		}
		return result;
	}
	public static T GetEnum<T>(this List<object> list, int index, T defaultValue)
	{
		string text = (index >= list.Count) ? null : (list[index] as string);
		T result;
		try
		{
			if (Enum.IsDefined(typeof(T), text))
			{
				result = (string.IsNullOrEmpty(text) ? defaultValue : ((T)((object)Enum.Parse(typeof(T), text))));
			}
			else
			{
				Debug.LogWarning(string.Format("Fail to convert (key<{0}>, value<{1}>) to {2}<{3}>. Error: {4}", new object[]
				{
					index,
					text,
					"enum",
					typeof(T),
					"Not an underlying value of this enumeration"
				}));
				result = defaultValue;
			}
		}
		catch (Exception ex)
		{
			Debug.LogWarning(string.Format("Fail to convert (key<{0}>, value<{1}>) to {2}<{3}>. Error: {4}", new object[]
			{
				index,
				text,
				"enum",
				typeof(T),
				ex.Message
			}));
			result = defaultValue;
		}
		return result;
	}
}