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Setting Up Data Connection with SORACOM Onyx LTE USB Modem on Linux

Recently, I found myself working with a cellular USB dongle on an embedded Linux system. I've previously documented my experience integrating an LTE device, the…

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Chapter 7 : Class Template Instantiation

In this chapter, we will learn various aspects of class template instantiation. Understanding the class template instantiation is pivotal to the overall understanding of the functioning of templates in general. The fundamental concept of template instantiation remains the same for both function templates and class templates. However, instantiation of class template instantiation is more complex than function template.

Mastering Function and Class Templates in C++: A Complete Guide

The content outlines seven chapters on C++ templates, covering introductory concepts, function templates, template parameters, return types, miscellaneous aspects, class templates, and class template instantiation. Each chapter provides a foundation for understanding and effectively using templates in C++. Additionally, it mentions the availability of source code.

Mastering Templates in C++: A Comprehensive Guide

C++ templates are a powerful tool for writing flexible and reusable code, enabling type-independent programming. This guide covers everything from basic template syntax to advanced concepts like class templates, function return types, and instantiation. Whether you're new to templates or looking to refine your skills, each chapter provides clear explanations and practical insights. Dive in and unlock the full potential of C++ templates to write more efficient and scalable programs.

Chapter 6 : Working with Class Templates

In the first section of the book, we have learned about the basic syntax and usage of a function template. In this second part of the book, we will focus on the class templates. Class templates are an essential tool for the programmer to design classes that can work on the generic data type. While class templates are an excellent tool for the programmers, it is slightly complex than the function templates. The syntax and usage may look a bit daunting for new programmers. In this chapter, we will learn about how to declare and define classes with templated parameters step by step with simple examples at each step.

How to add Microsoft KM Loopback adapter in Windows 10

Recently I have started playing around a bit with Windows PCs. I needed to add a Microsoft KM-Loopback adapter on a Virtual Windows 10 Enterprise.…

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Chapter 5 : Miscellaneous template aspects

In this chapter we will cover the following topics - Understanding difference between declaration and definition, Compiling and linking of template function, Organizing template function code, Abbreviated function templates, Overloading template function.

Chapter 4 : Return type of template function in C++

This chapter will discuss the various ways we can declare or deduce the return type of a template function. We can use either template or non-template parameters to declare the return type of a function template. We can also deduce the return type using keywords like auto and decltype. In some cases, we can declare a separate type parameter for the return type. Because of these intricacies, it is necessary to discuss the template function’s return type in detail with specific examples tailored for each case.

Chapter 3 : All about Template Parameters in C++

In Chapter 2 : Working with Function Templates in C++, we explored the mechanics of function templates and encountered the term template parameter. This chapter…

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Chapter 2 : Working with Function Templates in C++

In Chapter 1 : Introduction to Templates in C++, we briefly encountered function templates in C++. In this chapter, we focus on how to implement…

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Chapter 1 : Introduction to Templates in C++

C++ templates are intimidating for any beginner or intermediate level programmer as it is syntactically a bit cryptic and complex. Also, there are intricacies in how to use the powerful features of the language. A standard C++ book does not always go into the feature’s details instead of just touching upon the subject, which is not sufficiently explanatory for the first-time learners. Sometimes the examples are too complicated, or the explanations are too vague to understand. Often, there are not many different sample codes to practice enough to have a good grip on the subject. In other cases, the available books go so deep into the nitty-gritty of the language that the reader feels a bit lost in the sea of information. In either way, the subject seems daunting for the newbies or intermediate-level programmers. However, if we explain it systematically with simple examples and easy-to-understand explanations, the C++ template could be a powerful tool for programmers. Proper use of templates can lead to clean, elegant, and efficient code on many occasions. The reader should be a beginner or intermediate-level programmer who has a basic understanding of C++ programming. They do not need to have detailed, in-depth knowledge or vast experience on the subject but should be familiar with the C++ programming paradigm’s basic concepts and be looking to take it to the next level.

How to install Git Large File Storage on Windows 10

Handling large file git git. Git LFS is for supporting large files which are bigger than Git's recommended 50MB file size. You cannot push these files to your repository unless you have installed Git-LFS. This post describes the steps involved how to install Git-LFS on a Windows 10 machine.

How to install virtualenv on Ubuntu 18.04

virtualenv creates a virtual python environment inside a project folder of your choice. This enables your to install python packages within the virtual python environment without even having any admin rights on that particular machine. This makes the environment extremely flexible for developers.

Guide to FONA Module Setup and Troubleshooting

Unlock seamless connectivity with our comprehensive guide to setting up your FONA module on the SPRESENSE using the Arduino FONA library. This blog post dives into troubleshooting tips for when your serial prompt stalls at “#updater,” a common sign that your firmware needs an update. Whether you're a seasoned developer or a maker just starting out, follow our step-by-step instructions to flash, update, and optimise your setup for reliable performance and enhanced project success.

C++ notes: Shallow copy, overloaded assignment operator and deep copy explained

Operator overloading is one of the fundamental operation which come across often in a C++ program. It is bit cryptic in syntactical side as well as often a misunderstood topic amongst new programmer. I will try to explain this as a series of C++ related notes (as I like to call this) following this post.

How to replace the Kernel image in NOOBS with your custom Kernel

In one of the previous posts I have described Bringing up Rasberry Pi 3 with NOOBS. But after I brought up the Raspberry Pi (ver…

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Integrating LTE Device EM7565 into Raspberry Pi 3

Bring up Raspberry Pi To bring up your Raspberry Pi (my Pi is version 3 B) please follow the below link: How to bring up…

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Format a micro SD card using gparted utility

For formatting the micro SD card I usually use the gparted utility in Ubuntu. Format the micro SD with FAT 32 filesystem format. You need…

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Resolving GobiSerial Module Errors on Raspberry Pi

Encountering 'Unknown Symbol' errors while loading the GobiSerial module on Raspberry Pi? This in-depth guide walks you through debugging missing kernel symbols, manually loading required modules, and properly configuring dependencies using depmod and modprobe for a clean and persistent fix. Learn how to resolve LTE driver issues with Sierra Wireless EM7565 on RPi effortlessly!

How to Set Up Raspberry Pi with NOOBS

Getting Rasberry Pi up and running To bring up your Raspberry Pi (ver 3 B) with NOOBS follow the instructions here. Find the kernel version…

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How to pipe one bash command output to another within a python script

I was recently working with something which required me to build a code base and flash it into the board (hw) and then once that…

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nuttx kernel make menuconfig error in Ubuntu

If you are working with nuttx kernel you might have issues trying to bring up the kernel menuconfig with the below command: I had to…

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How to integrate a custom device driver into nuttx tree

I had written a blog on how to integrate a custom driver into Linux kernel tree previously here. Integrating a custom driver in nuttx kernel is pretty similar. But writing this down would probably be a good idea for any future reference.

General Linux developer’s tips and tricks

Stop Ubuntu going into suspended mode Disable suspend $ sudo systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target Created symlink /etc/systemd/system/sleep.target → /dev/null. Created symlink /etc/systemd/system/suspend.target →…

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Introduction to Arduino

Install the arduino IDE 1. https://www.arduino.cc/en/Main/Software/ 2. Select Linux 64 bit 3. Click Just Download Unzip the downloaded file as below: vbhadra@jupiter:~/Downloads$ tar -xf arduino-1.8.10-linux64.tar.xz…

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How to work in private branch in GIT

Time to time we have to work on source code which are downloaded from a git repository, modify the code, implement the functionality, test it,…

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Customizing Qt Creator 5.12.4

Install the custom Toolchain Download and install the toolchain rpm sudo alien ~/Downloads/<toolchain-name>.rpm sudo dpkg -i ./<toolchain-name>.deb Locate the arm compiler sudo find / -iname…

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How to create and run cppcheck executable from source code in linux machine (C++11 Static Analysis)

I do not have administrative rights on a linux server (openSuse Linux) I am working on right now. So installing anything is not an option…

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How to take snapshot and restore a snapshot in VirtualBox 5.2.6

Sometimes you may want to take a snapshot of the current state of your virtual machine (in my case Ubuntu Linux) so that you can revert back to it if anything goes wrong in the virtual machine. The feature in VirtualBox which helps in this is called a snapshot. A snapshot is basically a backup of your virtual machine in its current state.

Using Pthreads: Synchronization with pthread_join() Explained

The post discusses the advantages of using threads over separate processes, specifically in data sharing and communication. It highlights a scenario where a song title in a word processor can easily be accessed by a music player when both run as threads within the same process. The introduction of the pthread library is significant for managing threads in C. It demonstrates the use of pthread_create() to create threads and emphasizes the importance of pthread_join() to ensure proper synchronization, thereby preventing premature termination of threads. The post concludes by mentioning upcoming discussions on synchronization challenges like race conditions.

Difference between re-entrancy and thread-safety

Thread-safety of a function refers to the fact whether a function can be safely called from multiple threads simultaneously. Safety here means that even if multiple threads are executing the function simultaneously the data integrity is intact and is not intermingled. 

What is memory leak in a C program?

Memory leak is a phenomenon where a running C/C++ program or a running process or thread dynamically allocates memory block from the heap but fails to free the memory block when it no more requires the memory. This happens due to programmatic error where the handle to the allocated memory block gets lost. Over a time if the same programmatic entity (a process, or a thread or a function) comes into action repeatedly and leaks memory, all the free memory of the systems goes away and eventually the systems throws the dreaded "Out Of Memory" and crumbles down.

How to detect memory leak in c program using valgrind?

valgrind is a popular tool which can detect memory in run-time. This blog post discusses how to install, and run valgrind at linux command line to detect memory leak in a sample C program.

C++ notes: virtual function

This blog post discusses the polymorphism with the help of C++ language. The mechanism to implement polymorphism in C++ is known as Virtual Functions. With the help of a simple example I will try to explain the concept as clearly as I can.

How to resolve merge conflict in GIT

Merge Conflict Often you will encounter merge conflicts while doing rebase operation as described above. Here, is a example merge conflict error: The above lines…

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Marketing Management Assignment – Feasibility Analysis: Launching a branch of a company in a new market/country/economic zone

In your role as a Marketing Consultant, you have been asked by Wiggo*: a fictitious European supermarket (food retailer) chain (similar to Aldi and Lidl) to research and report on the feasibility of them launching in a new international market (this can be a country or economic zone of your choice and/or one you are familiar with).

How to publish a topic with mqtt broker running on iot.eclipse.org server

As part of iot application development for IoT I had to play around with the SSL connection establishment  with the remote mqtt servers. The below…

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How to access Ubuntu Linux Virtual Machine in NAT mode using FileZilla from Windows Host

I was facing an issue recently and it is like this. I run a Ubuntu Linux Virtual Machine on a Windows guest. Because of my…

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Why cannot connect to linux machine using FileZilla (sftp mode)?

I was trying to connect to a newly installed Ubuntu Linux version 12.04 using FileZilla but the application kept on timing out. This can happen…

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