ObjFW  Diff

	self = [super init];

	if (is == 0) {
		c = isa;
		[super dealloc];
		@throw [OFInvalidArgumentException newWithClass: c
						    andSelector: _cmd];
						       selector: _cmd];
	}

	data = NULL;
	itemsize = is;

	return self;
}

- (int)compare: (id)obj
{
	int ret;

	if (![obj isKindOfClass: [OFDataArray class]])
		@throw [OFInvalidArgumentException newWithClass: isa
						    andSelector: _cmd];
						       selector: _cmd];
	if ([obj itemsize] != itemsize)
		@throw [OFInvalidArgumentException newWithClass: isa
						    andSelector: _cmd];
						       selector: _cmd];

	if ([obj count] == count)
		return memcmp(data, [obj data], count * itemsize);

	if (count > [obj count]) {
		if ((ret = memcmp(data, [obj data], [obj count] * itemsize)))
			return ret;