/// <summary>
/// Sorts the collection based on a specified lambda expression.
/// </summary>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">The lambda expression.</param>
/// <param name="descending">if set to <c>true</c>, then sorts then collection in descending order.</param>
public void Sort <P>(SortFunc <T, P> lambda, bool descending)
where P : IComparable <P>
{
// get sorter and sort
var sorter = new ListSorter <T>();
sorter.Sort(Items as List <T>, lambda, descending);
}
/// <summary>
/// Sorts the collection based on a specified lambda expression.
/// </summary>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">The lambda expression.</param>
public void Sort <P>(SortFunc <T, P> lambda)
where P : IComparable <P>
{
// get sorter and sort
var sorter = new ListSorter <T>();
sorter.Sort(Items as List <T>, lambda, false);
}