From 7a10670493bbd0df92b07d0602ee07bb29f80aa7 Mon Sep 17 00:00:00 2001
From: Chris Lalancette <clalancette@gmail.com>
Date: Mon, 28 Aug 2023 12:38:58 -0400
Subject: [PATCH] Remove unnecessary captures in the various demos. (#647)

This was pointed out by building with clang.

Signed-off-by: Chris Lalancette <clalancette@gmail.com>
---
 demo_nodes_cpp/src/parameters/set_parameters_callback.cpp | 4 ++--
 demo_nodes_cpp/src/services/introspection_client.cpp      | 2 +-
 demo_nodes_cpp/src/services/introspection_service.cpp     | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/demo_nodes_cpp/src/parameters/set_parameters_callback.cpp b/demo_nodes_cpp/src/parameters/set_parameters_callback.cpp
index eaf47a43d..6be64e6ea 100644
--- a/demo_nodes_cpp/src/parameters/set_parameters_callback.cpp
+++ b/demo_nodes_cpp/src/parameters/set_parameters_callback.cpp
@@ -47,7 +47,7 @@ class SetParametersCallback : public rclcpp::Node
     // setting another parameter from the callback is possible
     // we expect the callback to be called for param2
     auto pre_set_parameter_callback =
-      [this](std::vector<rclcpp::Parameter> & parameters) {
+      [](std::vector<rclcpp::Parameter> & parameters) {
         for (auto & param : parameters) {
           // if "param1" is being set try setting "param2" as well.
           if (param.get_name() == "param1") {
@@ -58,7 +58,7 @@ class SetParametersCallback : public rclcpp::Node
 
     // validation callback
     auto on_set_parameter_callback =
-      [this](std::vector<rclcpp::Parameter> parameters) {
+      [](std::vector<rclcpp::Parameter> parameters) {
         rcl_interfaces::msg::SetParametersResult result;
         result.successful = true;
 
diff --git a/demo_nodes_cpp/src/services/introspection_client.cpp b/demo_nodes_cpp/src/services/introspection_client.cpp
index 4da953121..53ca3457f 100644
--- a/demo_nodes_cpp/src/services/introspection_client.cpp
+++ b/demo_nodes_cpp/src/services/introspection_client.cpp
@@ -70,7 +70,7 @@ class IntrospectionClientNode : public rclcpp::Node
     client_ = create_client<example_interfaces::srv::AddTwoInts>("add_two_ints");
 
     auto on_set_parameter_callback =
-      [this](std::vector<rclcpp::Parameter> parameters) {
+      [](std::vector<rclcpp::Parameter> parameters) {
         rcl_interfaces::msg::SetParametersResult result;
         result.successful = true;
         for (const rclcpp::Parameter & param : parameters) {
diff --git a/demo_nodes_cpp/src/services/introspection_service.cpp b/demo_nodes_cpp/src/services/introspection_service.cpp
index 5c6888398..d258d4720 100644
--- a/demo_nodes_cpp/src/services/introspection_service.cpp
+++ b/demo_nodes_cpp/src/services/introspection_service.cpp
@@ -80,7 +80,7 @@ class IntrospectionServiceNode : public rclcpp::Node
     srv_ = create_service<example_interfaces::srv::AddTwoInts>("add_two_ints", handle_add_two_ints);
 
     auto on_set_parameter_callback =
-      [this](std::vector<rclcpp::Parameter> parameters) {
+      [](std::vector<rclcpp::Parameter> parameters) {
         rcl_interfaces::msg::SetParametersResult result;
         result.successful = true;
         for (const rclcpp::Parameter & param : parameters) {