Hi, I think you moulded my code, can you explain your version of code now?

Yes, if you could do your best to go through the code line by line and explain what each part does, note any parts which are confusing, make guesses (mark them), I'll be happy to help explain any part of what I posted

Example of this approach can be found at Re: A Beginner Needs Homework help and Re^7: search and replace strings in different files in a directory (Path::Tiny)/Re^10: search and replace strings in different files in a directory