using System;
using System.Collections.Generic;

namespace UIWidgets
{
	public static class Extensions
	{
		public static void ForEach<T>(this IEnumerable<T> enumerable, Action<T, int> handler)
		{
			int num = 0;
			foreach (T item in enumerable)
			{
				handler(item, num);
				num++;
			}
		}

		public static void ForEach<T>(this IEnumerable<T> enumerable, Action<T> handler)
		{
			foreach (T item in enumerable)
			{
				handler(item);
			}
		}

		public static ObservableList<T> ToObservableList<T>(this IEnumerable<T> enumerable, bool observeItems = true)
		{
			return new ObservableList<T>(enumerable, observeItems);
		}

		public static float SumFloat<T>(this IList<T> list, Func<T, float> calculate)
		{
			float num = 0f;
			for (int i = 0; i < list.Count; i++)
			{
				num += calculate(list[i]);
			}
			return num;
		}

		public static float SumFloat<T>(this ObservableList<T> list, Func<T, float> calculate)
		{
			float num = 0f;
			for (int i = 0; i < list.Count; i++)
			{
				num += calculate(list[i]);
			}
			return num;
		}

		public static List<TOutput> Convert<TInput, TOutput>(this List<TInput> input, Converter<TInput, TOutput> converter)
		{
			return input.ConvertAll(converter);
		}
	}
}