ObjFW  Diff

	memset(_items + _count * _itemSize, '\0', count * _itemSize);
	_count += count;
}

- (void)removeItemAtIndex: (size_t)idx
{
	[self removeItemsInRange: OFMakeRange(idx, 1)];
}

- (void)removeItemsInRange: (OFRange)range
{
	if (range.length > SIZE_MAX - range.location ||
	    range.location + range.length > _count)
		@throw [OFOutOfRangeException exception];