1 day ago

error: invalid conversion from ‘const char’ to ‘char’

trial and error, emphases on error — Trying to convert from std::string to char* Using const_cast Operator We know that both string::c_str or string::data functions returns const char*. To get a non-const version, we can use the const_cast operator, which removes the const attribute from a class. This works in constant time as no copying is involved. Please note that this approach will give us direct access…

Const

1 min read

error: invalid conversion from ‘const char’ to ‘char’

trial and error, emphases on error

Trying to convert from std::string to char*

Using `const_cast` Operator

We know that both string::c_str or string::data functions returns const char*. To get a non-const version, we can use the const_cast operator, which removes the const attribute from a class. This works in constant time as no copying is involved.

Please note that this approach will give us direct access…

1 day ago

My VIM Workflow

The few commands I actually do use — Execute a Command without Exiting vim with :! Use the :! command to execute on the command line without exiting vim. Probably my favorite tool. File Navigation Go to the top of the file with ‘gg’ Go to the bottom of the file with ‘G’ Go to line 23 with ‘:23' insert whatever line number you need. Jump between…

Vim

3 min read

1 day ago

C++ Exception Handling

Back to Foundations — The Basics An exception is a problem that arises during the execution of a program. A C++ exception is a response to an exceptional circumstance that arises while a program is running, such as an attempt to divide by zero. Exceptions provide a way to transfer control from one part of a…

Cpp

4 min read

2 days ago

Placing a Node in an Exact Location in ns3 with the ListPositionAllocator

Example: MobilityHelper mobility; Ptr<ListPositionAllocator> positionAlloc = CreateObject <ListPositionAllocator>(); positionAlloc ->Add(Vector(0, 0, 0)); // node0 positionAlloc ->Add(Vector(1000, 0, 0)); // node1 positionAlloc ->Add(Vector(450, 0, 0)); // node2 mobility.SetPositionAllocator(positionAlloc); mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel"); mobility.Install(nodes);

Ns 3 Mini Projects

1 min read

Placing a Node in an Exact Location in ns3 with the ListPositionAllocator

Example:

MobilityHelper mobility;
  Ptr<ListPositionAllocator> positionAlloc = CreateObject <ListPositionAllocator>();
  positionAlloc ->Add(Vector(0, 0, 0)); // node0
  positionAlloc ->Add(Vector(1000, 0, 0)); // node1
  positionAlloc ->Add(Vector(450, 0, 0)); // node2
  mobility.SetPositionAllocator(positionAlloc);
  mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
  mobility.Install(nodes);

References

[1] Google Groups. ns3. Assign Positions to Mesh Nodes. https://groups.google.com/g/ns-3-users/c/8e7fIZTMV_A?pli=1…

3 days ago

C++ 3D Viewer Code with Explanations

the two cent tour — My Specs: Built with Visual Studio 2013 FreeGLUT and GLUI dlls included on the repo and already linked into the Visual Studio project. Source Code: GitHub - sitting-duck/mesh-bind-cpp-opengl I wrote this for a Computer Animation course at University of Texas at Dallas in 2013. This project is pretty academeic…github.com Explanation: Here’s what the actual program itself looks like when it runs:

Cpp

3 min read

4 days ago

Quick Easy Hack for Copy/Pasting Settings Between Configurations such as Release and Debug

I wish I had known about this years ago — Background I have spent so much time copy pasting these settings between Release mode and Debug mode configurations in the Visual Studio settings. I never liked that I had to use a GUI and I preferred using Makefiles and things where you could copy and paste like a civilized person, but…

Visual Studio

2 min read

Quick Easy Hack for Copy/Pasting Settings Between Configurations such as Release and Debug

4 days ago

My First Impression Using Software Ideas Modeler UML Modeling Tool for C++

A great tool that is free for non commercial use, color me impressed — Background We’re here because I tried using the Class Diagram generator that comes with Visual Studio, and while it was pretty and it was fast enough to generate the diagram, I didn’t feel like I had a whole lot of control, and digging through the docs, I felt like I kept…

Uml

4 min read

My First Impression Using Software Ideas Modeler UML Modeling Tool for C++

4 days ago

Using the UML Viewer that comes with Visual Studio 2013

a little messy, but it’s built in and… —

Uml

2 min read

Using the UML Viewer that comes with Visual Studio 2013

Using the UML Viewer that comes with Visual Studio 2013

a little messy, but it’s built in and…

4 days ago

Install Java 11 Windows 11

Go to the Oracle archive site for JDK 11 archive downloads. [1] At this point v11 has been moved to the archives and they are pushing 17, 18 and 19. Scroll down to the Java SE Development Kit 11.0.14 section And scroll all the way down to the bottom and…

Java

3 min read

Jun 17

enB: Evolved Node Base Stations in 4G LTE Networks, an Introduction

eNB: Evolved Node Base Station — If you are familiar with the base stations within the 3G, 4G and 5G mobile networks, then you may have come across the terms Node B, eNodeB and gNodeB before. What is a Base Station? Base stations are part of a mobile radio network that represents the largest part of the overall mobile network. A…

Enb

3 min read