Being chatbot developer for different instant messaging (IM) platforms I am using Viber messanger intentively every day. One day I got blocked by Viber with no reason. Here I will tell this story. At that moment I am working remotely from Turkey. WiFi connection is not that good here. Thus…

Sometimes in your daily work you can meet a problem with an image hosted somewhere in cloud. Knowing whether the image is valid can be very helpful in determining the issue. Here I will show how you can easily obtain this information with well known tool curl. curl is a…

In this post I will show why keyword extern is useful in large projects on C language with many files. Let’s make a simple project. Create a file logger.h: int max_callstack_depth = 3; Then create file utils.h #include <stdio.h> void handle_error(); Here we only declare method handle_error. Implement method in…

In different situations we often need a specific level of verbosity during compilation. Sometimes we need to see less critical warnings, sometimes only critical errors is enough. GCC compiler provides compiler options for outputting different levels of warnings. You can use compiler options to suppress or adjust level of verbosity…

When working in a standard git flow that could be quite cumbersome to enter the name of current branch each time you pull and push to remote repository. In this post I will show how to set the name of current branch once and use commands ‘git pull’ and ‘git…

Sometimes in working on your projects you need to undone some unwanted commits made to master branch. I will show how to do it with GitLab repo. If you follow regular workflow with git reset to reset to some commit git reset --hard <commit_hash> git clean -f -d and then force push to master to reflect changes on remote repo git push -f origin main you can get error remote: GitLab: You are not allowed to force push code to a protected branch on this project.

Sometimes we need to save some webpage. Standard way is to copy url and title (some main header) of webpage. We can automate it and make our life easier. Use Copy page title and url extension for Chrome. Just install it from Chrome store. Then click right button on some page you need to save and choose option Copy page title and url marked by the icon of extension. Both url and title will be copied to clipboard as one string.

Sometimes developers need to explore some JSON files. That can be quite tough and time comsuming. We can do it easier with command line tool jq. First install it: sudo apt update sudo apt install -y jq Run command: jq '.' result.json Result will be pretty nice looking

In this post I will explain operators new (new[]) and delete(delete[]) in C++. Memory for objects of classes are allocated on the heap in C++. operators new and delete are used for this purpose. To allocate memory for an object of some class we should use operatotor new. operator new…