using System;
using System.Text;

namespace BitStrap
{
	public static class ArrayExtensions
	{
		public static int Count<T>(this T[] collection, Predicate<T> predicate)
		{
			if (predicate == null)
			{
				return 0;
			}
			int num = 0;
			for (int i = 0; i < collection.Length; i++)
			{
				if (predicate(collection[i]))
				{
					num++;
				}
			}
			return num;
		}

		public static bool All<T>(this T[] collection, Predicate<T> predicate)
		{
			if (predicate == null)
			{
				return false;
			}
			for (int i = 0; i < collection.Length; i++)
			{
				if (!predicate(collection[i]))
				{
					return false;
				}
			}
			return true;
		}

		public static bool Any<T>(this T[] collection, Predicate<T> predicate)
		{
			if (predicate == null)
			{
				return false;
			}
			for (int i = 0; i < collection.Length; i++)
			{
				if (predicate(collection[i]))
				{
					return true;
				}
			}
			return false;
		}

		public static T FirstOrDefault<T>(this T[] collection)
		{
			return (collection.Length <= 0) ? default(T) : collection[0];
		}

		public static T FirstOrDefault<T>(this T[] collection, Predicate<T> predicate)
		{
			for (int i = 0; i < collection.Length; i++)
			{
				if (predicate(collection[i]))
				{
					return collection[i];
				}
			}
			return default(T);
		}

		public static string ToStringFull<T>(this T[] collection)
		{
			if (collection == null)
			{
				return "null";
			}
			if (collection.Length <= 0)
			{
				return "[]";
			}
			StringBuilder stringBuilder = new StringBuilder();
			stringBuilder.Append("[ ");
			for (int i = 0; i < collection.Length - 1; i++)
			{
				stringBuilder.Append(collection[i].ToString());
				stringBuilder.Append(", ");
			}
			stringBuilder.Append(collection[collection.Length - 1].ToString());
			stringBuilder.Append(" ]");
			return stringBuilder.ToString();
		}
	}
}