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3d7a39ed00
* Include only what is used * Use forward declaration when possible * Sorted includes refs #630
48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
/* Copyright (C) 2016
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* swift project Community / Contributors
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*
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* This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
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* directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
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* including this file, may be copied, modified, propagated, or distributed except according to the terms
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* contained in the LICENSE file.
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*/
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#include "blackmisc/dictionary.h"
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uint BlackMisc::calculateHash(const QList<uint> &values, const char *className)
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{
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// http://stackoverflow.com/questions/113511/hash-code-implementation/113600#113600
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if (values.isEmpty()) return 0;
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uint hash = values.first();
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for (int i = 1; i < values.size(); i++)
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{
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hash = 37 * hash + values.at(i);
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}
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// same values, but different class?
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if (className)
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{
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hash = 37 * hash + qHash(QString(className));
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}
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return hash;
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}
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uint BlackMisc::calculateHash(const QList<int> &values, const char *className)
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{
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QList<uint> list;
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uint s = 0;
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foreach(int i, values)
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{
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if (i >= 0)
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{
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list.append(static_cast<uint>(i));
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}
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else
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{
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list.append(static_cast<uint>(i));
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list.append(s++);
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}
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}
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return calculateHash(list, className);
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}
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