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[ginac.git] / ginac / color.cpp

diff --git a/ginac/color.cpp b/ginac/color.cpp
index 0f7723e359d92f5dad7af8d14bf7f2f0406b7185..f8cbca07bd369a4cc72b4fbaf3decf702bc00e05 100644 (file)
--- a/ginac/color.cpp
+++ b/ginac/color.cpp
@@ -3,7 +3,7 @@
  *  Implementation of GiNaC's color (SU(3) Lie algebra) objects. */
 
 /*
- *  GiNaC Copyright (C) 1999-2015 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2019 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -332,7 +332,7 @@ bool su3t::contract_with(exvector::iterator self, exvector::iterator other, exve
 
                // T.a S T.a = 1/2 Tr(S) - 1/6 S
                } else {
-                       exvector::iterator it = self + 1;
+                       auto it = self + 1;
                        while (it != other) {
                                if (!is_a<color>(*it)) {
                                        return false;
@@ -400,9 +400,7 @@ bool su3d::contract_with(exvector::iterator self, exvector::iterator other, exve
                 && ex_to<indexed>(*self).has_dummy_index_for(other[1].op(1))) {
 
                        exvector self_indices = ex_to<indexed>(*self).get_indices();
-                       exvector dummy_indices;
-                       dummy_indices.push_back(other[0].op(1));
-                       dummy_indices.push_back(other[1].op(1));
+                       exvector dummy_indices = {other[0].op(1), other[1].op(1)};
                        int sig;
                        ex a = permute_free_index_to_front(self_indices, dummy_indices, sig);
                        *self = numeric(5, 6);
@@ -453,9 +451,7 @@ bool su3f::contract_with(exvector::iterator self, exvector::iterator other, exve
                 && ex_to<indexed>(*self).has_dummy_index_for(other[1].op(1))) {
 
                        exvector self_indices = ex_to<indexed>(*self).get_indices();
-                       exvector dummy_indices;
-                       dummy_indices.push_back(other[0].op(1));
-                       dummy_indices.push_back(other[1].op(1));
+                       exvector dummy_indices = {other[0].op(1), other[1].op(1)};
                        int sig;
                        ex a = permute_free_index_to_front(self_indices, dummy_indices, sig);
                        *self = numeric(3, 2) * sig * I;