From 053c248f060ace08cc7db2cf07b14cc91f27f11c Mon Sep 17 00:00:00 2001
From: Klaus Basan <klaus.basan@klausbasan.de>
Date: Tue, 16 Sep 2014 13:41:37 +0200
Subject: [PATCH] refs #325, added async. sort (kind of experimental feature to
 see performance impact)

---
 src/blackmisc/sequence.h | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/blackmisc/sequence.h b/src/blackmisc/sequence.h
index e196d1432..9bf67fd2f 100644
--- a/src/blackmisc/sequence.h
+++ b/src/blackmisc/sequence.h
@@ -20,6 +20,7 @@
 #include <iterator>
 #include <utility>
 #include <initializer_list>
+#include <QtConcurrent/QtConcurrent>
 
 namespace BlackMisc
 {
@@ -465,6 +466,28 @@ namespace BlackMisc
             return result;
         }
 
+        /*!
+         * \brief Return a copy as derived container sorted by a given comparator predicate.
+         */
+        template <class TargetContainer, class Predicate>
+        TargetContainer sortedDerived(Predicate p) const
+        {
+            CSequence result = *this;
+            result.sort(p);
+            return result;
+        }
+
+        /*!
+         * \brief Return a copy as derived container sorted by a given comparator predicate.
+         * \remarks Sorts in background.
+         */
+        template <class TargetContainer, class Predicate>
+        QFuture<TargetContainer> sortedAsync(Predicate p) const
+        {
+            QFuture<TargetContainer> f = QtConcurrent::run(this, &CSequence::sortedDerived<TargetContainer, Predicate>, p);
+            return f;
+        }
+
         /*!
          * \brief Return a copy sorted by some particular key(s).
          * \param key1 A pointer to a member function of T.