using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace Simple.Data.Extensions

{

public static class ArrayExtensions

{

public static T[] Append<T>(this T[] array, T newItem)

where T : class

{

if (array.Length == 0) return new[] {newItem};

var newArray = new T[array.Length + 1];

array.CopyTo(newArray, 0);

newArray[array.Length] = newItem;

return newArray;

}

public static T[] ReplaceOrAppend<T>(this T[] array, T newItem)

where T : class

{

if (array.Length == 0) return new[] { newItem };

var existingItem = array.FirstOrDefault(item => item.GetType() == newItem.GetType());

if (existingItem != null)

{

var replacedArray = (T[])array.Clone();

int index = Array.IndexOf(array, existingItem);

replacedArray[index] = newItem;

return replacedArray;

}

var newArray = new T[array.Length + 1];

array.CopyTo(newArray, 0);

newArray[array.Length] = newItem;

return newArray;

}

public static T[] Replace<T>(this T[] array, int index, T newItem)

{

var newArray = (T[])array.Clone();

newArray[index] = newItem;

return newArray;

}

}

}