ObjFW  Diff

{
	size_t i, count = [self count];

	for (i = 0; i < count; i++)
		if ([[self objectAtIndex: i] isEqual: object])
			return i;

	return OF_INVALID_INDEX;
	return OF_NOT_FOUND;
}

- (size_t)indexOfObjectIdenticalTo: (id)object
{
	size_t i, count = [self count];

	for (i = 0; i < count; i++)
		if ([self objectAtIndex: i] == object)
			return i;

	return OF_INVALID_INDEX;
	return OF_NOT_FOUND;
}

- (BOOL)containsObject: (id)object
{
	return ([self indexOfObject: object] != OF_INVALID_INDEX);
	return ([self indexOfObject: object] != OF_NOT_FOUND);
}

- (BOOL)containsObjectIdenticalTo: (id)object
{
	return ([self indexOfObjectIdenticalTo: object] != OF_INVALID_INDEX);
	return ([self indexOfObjectIdenticalTo: object] != OF_NOT_FOUND);
}

- (id)firstObject
{
	if ([self count] > 0)
		return [self objectAtIndex: 0];