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Ref T280, sample to test if QHash or QMap for key callsign is faster

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* QHash seems to be faster and is const
* see also https://woboq.com/blog/qmap_qhash_benchmark.html
This commit is contained in:
Klaus Basan
2018-06-12 00:42:10 +02:00
parent 25a2a8d350
commit 398ca4fb45
3 changed files with 172 additions and 4 deletions
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20
samples/blackmisc/samplesperformance.h
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@@ -13,10 +13,13 @@
#ifndef BLACKSAMPLE_SAMPLESPERFORMANCE_H
#define BLACKSAMPLE_SAMPLESPERFORMANCE_H
#include "blackmisc/aviation/aircraftsituationlist.h"
#include "blackmisc/simulation/aircraftmodellist.h"
#include "blackmisc/aviation/aircraftsituationlist.h"
#include "blackmisc/aviation/callsignset.h"
#include <QTextStream>
#include <QtGlobal>
#include <QMap>
#include <QHash>
class QTextStream;
@@ -47,6 +50,9 @@ namespace BlackSample
//! const QString vs. QStringLiteral
static int samplesStringLiteralVsConstQString(QTextStream &out);
//! Callsign based hash/map comparison
static int sampleQMapVsQHashByCallsign(QTextStream &out);
private:
static const qint64 DeltaTime = 10;
@@ -85,6 +91,18 @@ namespace BlackSample
//! String list generated
static QStringList replacedList();
//! Get n callsigns
static BlackMisc::Aviation::CCallsignSet callsigns(int number);
//! Situations
static const BlackMisc::Aviation::CAircraftSituationList situations(const BlackMisc::Aviation::CCallsignSet &callsigns);
//! Situations map
static const QMap<BlackMisc::Aviation::CCallsign, BlackMisc::Aviation::CAircraftSituation> situationsMap(const BlackMisc::Aviation::CCallsignSet &callsigns);
//! Situations hash
static const QHash<BlackMisc::Aviation::CCallsign, BlackMisc::Aviation::CAircraftSituation> situationsHash(const BlackMisc::Aviation::CCallsignSet &callsigns);
};
} // namespace