/// <summary>
/// Initializes a new instance of the <see cref="DownwardTreeWalk<T>"/> class.
/// </summary>
/// <param name="initialNode">The initial tree node to start from.</param>
/// <param name="selectorFunction">The selector function that is supposed to return a list of children for each node.</param>
/// <param name="downwardTreeWalkType">Type of the downward tree walk.</param>
public DownwardTreeWalk(T initialNode, Func <T, IEnumerable <T> > selectorFunction, DownwardTreeWalkType downwardTreeWalkType = DownwardTreeWalkType.BreadthFirst)
: base(initialNode, selectorFunction)
{
this.DownwardTreeWalkType = downwardTreeWalkType;
}
public static IEnumerable <T> DownwardTreeWalk <T>(this T subject, Func <T, IEnumerable <T> > selectorFunction, DownwardTreeWalkType downwardTreeWalkType = DownwardTreeWalkType.BreadthFirst)
where T : class
{
if (subject == null)
{
throw new ArgumentNullException("subject");
}
return(new DownwardTreeWalk <T>(subject, selectorFunction, downwardTreeWalkType));
}
