From: David Wells <wellsd2@rpi.edu>
Date: Sat, 1 Apr 2017 16:53:08 +0000 (-0400)
Subject: Use a swap in place of a copy.
X-Git-Tag: v9.0.0-rc1~1746^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F4171%2Fhead;p=dealii.git

Use a swap in place of a copy.
---

diff --git a/source/base/partitioner.cc b/source/base/partitioner.cc
index 63f3edc9e3..3f4d01522b 100644
--- a/source/base/partitioner.cc
+++ b/source/base/partitioner.cc
@@ -269,6 +269,7 @@ namespace Utilities
 
         // allocate memory for import data
         std::vector<std::pair<unsigned int,unsigned int> > import_targets_temp;
+        import_targets_temp.reserve(n_procs);
         n_import_indices_data = 0;
         for (unsigned int i=0; i<n_procs; i++)
           if (receive_buffer[i] > 0)
@@ -277,7 +278,8 @@ namespace Utilities
               import_targets_temp.push_back(std::pair<unsigned int,
                                             unsigned int> (i, receive_buffer[i]));
             }
-        import_targets_data = import_targets_temp;
+
+        import_targets_data = std::move(import_targets_temp);
       }
 
       // send and receive indices for import data. non-blocking receives and