public ChangeTracker(T target)
{
Target = target;
var type = Target.GetType();
lock (PropertyCache) {
if (!PropertyCache.ContainsKey(type))
{
PropertyCache.Add(type, type.GetProperties().Select(each => each).ToList());
}
}
Properties = PropertyCache[type].Select(each => new ChangeTrackerProperty(each)).ToList();
GetChanges();
}