Getting Started with ROS on Embedded Systems - User Guide - C++ - Names

Getting Started with ROS on Embedded Systems
ROS on Embedded Systems Basics
Getting Started
Installation Configuration Setting up environment Execution
C++ User Guide
Package set up Initialization Topics Messages Names Publishers and subscribers Launch files Parameters
Examples
Basic pipelines V4L2 capture node Turn detector node Proximity detector node
Performance
Xavier TX1 TX2 Nano
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Introduction

This wiki is based on the following page: http://wiki.ros.org/roscpp/Overview/Names%20and%20Node%20Information

Name manipulation is an important section for ROS, in here you can find useful functions that work well when doing this manipulation

Functions

A useful function is a resolve, which lets you create a name with the namespace of the node and a given name, resulting in node_namespace/name

std::string ros::names::resolve(const std::string& name, bool remap = true);

This is useful when you don't want to have the node name pre-appended to your topic names.

Another function is the append, which simply appends two strings resulting in left/right

std::string ros::names::append(const std::string& left, const std::string& right);