public bool Exchange(int index, T item, out T previous)
{
var found = BucketHelper.Null;
previous = default(T);
var result = _bucketCore.DoMayIncrement
(
index,
(ref object target) =>
{
found = Interlocked.Exchange(ref target, (object)item ?? BucketHelper.Null);
return(found == null);
}
);
if (result)
{
Interlocked.Increment(ref _count);
return(true);
}
if (found != BucketHelper.Null)
{
previous = (T)found;
}
return(false);
}
public Bucket(IEnumerable <T> source)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
_bucketCore = new BucketCore(7);
var index = 0;
foreach (var item in source)
{
var copy = item;
_bucketCore.DoMayIncrement
(
index,
(ref object target) => Interlocked.Exchange(ref target, (object)copy ?? BucketHelper.Null) == null
);
index++;
_count++;
}
}