public static void CopyValuesTo <TSource, TTarget>(this IEnumerable <TSource> sources,
IEnumerable <TTarget> targets,
Action <TSource, TTarget> onSourceToTarget)
{
EnumerableIterator <TSource> sourceIterator = new EnumerableIterator <TSource>(sources);
EnumerableIterator <TTarget> destinationIterator = new EnumerableIterator <TTarget>(targets);
while (sourceIterator.HasCurrent && destinationIterator.HasCurrent)
{
onSourceToTarget(sourceIterator.Current, destinationIterator.Current);
sourceIterator.MoveNext();
destinationIterator.MoveNext();
}
}
//see: Best algorithm for synchronizing two IList in C# 2.0
//http://stackoverflow.com/questions/161432/best-algorithm-for-synchronizing-two-ilist-in-c-2-0
public static void CompareSortedCollections <T>(IEnumerable <T> source, IEnumerable <T> destination,
IComparer <T> comparer, Action <T> onLeftOnly,
Action <T> onRightOnly, Action <T, T> onBoth)
{
EnumerableIterator <T> sourceIterator = new EnumerableIterator <T>(source);
EnumerableIterator <T> destinationIterator = new EnumerableIterator <T>(destination);
while (sourceIterator.HasCurrent && destinationIterator.HasCurrent)
{
// While LHS < RHS, the items in LHS aren't in RHS
while (sourceIterator.HasCurrent &&
(comparer.Compare(sourceIterator.Current, destinationIterator.Current) < 0))
{
onLeftOnly(sourceIterator.Current);
sourceIterator.MoveNext();
}
// While RHS < LHS, the items in RHS aren't in LHS
while (sourceIterator.HasCurrent && destinationIterator.HasCurrent &&
(comparer.Compare(sourceIterator.Current, destinationIterator.Current) > 0))
{
onRightOnly(destinationIterator.Current);
destinationIterator.MoveNext();
}
// While LHS==RHS, the items are in both
while (sourceIterator.HasCurrent && destinationIterator.HasCurrent &&
(comparer.Compare(sourceIterator.Current, destinationIterator.Current) == 0))
{
onBoth(sourceIterator.Current, destinationIterator.Current);
sourceIterator.MoveNext();
destinationIterator.MoveNext();
}
}
// Mop up.
while (sourceIterator.HasCurrent)
{
onLeftOnly(sourceIterator.Current);
sourceIterator.MoveNext();
}
while (destinationIterator.HasCurrent)
{
onRightOnly(destinationIterator.Current);
destinationIterator.MoveNext();
}
}
