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@Larry57
Created June 3, 2011 13:39
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Ancestors and Descendants for Tree handling
using System;
using System.Collections.Generic;
public static class Extensions
{
static public IEnumerable<T> Descendants<T>(this IEnumerable<T> source, Func<T, IEnumerable<T>> descendBy)
{
foreach (T value in source)
{
yield return value;
foreach (T child in descendBy(value).Descendants<T>(descendBy))
{
yield return child;
}
}
}
static public IEnumerable<T> Ancestors<T>(this T source, Func<T, T> parentOf)
{
var Parent = parentOf(source);
while (Parent != null)
{
yield return Parent;
Parent = parentOf(Parent);
}
}
}
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