public static void RemoveAtUnordered(UnsafeList *list, int index)
{
UDebug.Assert(list != null);
UDebug.Assert(list->_items.Ptr != null);
var count = list->_count;
// cast to uint trick, which eliminates < 0 check
if ((uint)index >= (uint)count)
{
throw new IndexOutOfRangeException(ThrowHelper.ArgumentOutOfRange_Index);
}
// reduce count
list->_count = --count;
if (index < count)
{
UnsafeBuffer.Move(list->_items, count, index, 1);
}
}
public static void RemoveAt(UnsafeList *list, int index)
{
UDebug.Assert(list != null);
UDebug.Assert(list->_items.Ptr != null);
var count = list->_count;
// cast to uint trick, which eliminates < 0 check
if ((uint)index >= (uint)count)
{
throw new IndexOutOfRangeException(ThrowHelper.ArgumentOutOfRange_Index);
}
// reduce count
list->_count = --count;
// if index is still less than count, it means we removed an item
// not at the end of the list, and that we have to shift the items
// down from (index+1, count-index) to (index, count-index)
if (index < count)
{
UnsafeBuffer.Move(list->_items, index + 1, index, count - index);
}
}
