ObjFW  Diff

/*
 * Copyright (c) 2008-2021 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *

	[element retain];

	objc_autoreleasePoolPop(pool);

	return [element autorelease];
}

- (OFSet *)setBySubtractingSet: (OFSet *)set
{
	OFMutableSet *new = [[self mutableCopy] autorelease];
	[new minusSet: set];
	[new makeImmutable];
	return new;
}

- (OFSet *)setByIntersectingWithSet: (OFSet *)set
{
	OFMutableSet *new = [[self mutableCopy] autorelease];
	[new intersectSet: set];
	[new makeImmutable];
	return new;
}

- (OFSet *)setByAddingSet: (OFSet *)set
{
	OFMutableSet *new = [[self mutableCopy] autorelease];
	[new unionSet: set];
	[new makeImmutable];
	return new;
}