From f8afb7a50839fc541457ba308c69f3e3dd381788 Mon Sep 17 00:00:00 2001
From: Emerson Knapp <emerson.b.knapp@gmail.com>
Date: Tue, 10 Mar 2020 17:47:07 -0700
Subject: [PATCH] Use a list instead of a set for node names list

Signed-off-by: Emerson Knapp <emerson.b.knapp@gmail.com>
---
 rmw_cyclonedds_cpp/src/rmw_node.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/rmw_cyclonedds_cpp/src/rmw_node.cpp b/rmw_cyclonedds_cpp/src/rmw_node.cpp
index dd096410..1eb41431 100644
--- a/rmw_cyclonedds_cpp/src/rmw_node.cpp
+++ b/rmw_cyclonedds_cpp/src/rmw_node.cpp
@@ -2884,14 +2884,14 @@ extern "C" rmw_ret_t rmw_get_node_names(
     return RMW_RET_ERROR;
   }
 
-  std::set<std::pair<std::string, std::string>> ns;
+  std::vector<std::pair<std::string, std::string>> ns;
   const auto re = std::regex("^name=(.*);namespace=(.*);$", std::regex::extended);
   auto oper =
     [&ns, re](const dds_builtintopic_participant_t & sample, const char * ud) -> bool {
       std::cmatch cm;
       static_cast<void>(sample);
       if (std::regex_search(ud, cm, re)) {
-        ns.insert(std::make_pair(std::string(cm[1]), std::string(cm[2])));
+        ns.push_back(std::make_pair(std::string(cm[1]), std::string(cm[2])));
       }
       return true;
     };