Please read How do I ask and answer homework questions? and Open letter to students with homework problems — Samathingamajig 26 secs ago

Welcome to Stack Overflow! How to ask homework question and Open letter to students with homework problems — Barmar 22 secs ago

Falsehoods Programmers Believe About Names — Biffen 45 secs ago

Re “from c++ standard's prospective anything is allowed to happen”: Anything is allowed to happen by the C++’s requirements is different from anything can happen. Yes, the C++ standard’s requirements do not impose any restrictions, so they allow anything, but they do not enable anything; they do not make it so that things can happen. A programmers need to know the difference between these. — Eric Postpischil 33 secs ago

Please, post text as text, not as photographs of text. This is a website for programmers, not photographers. We want to copy&paste&run your code, copy&paste your inputs, read your outputs, and copy&paste&google your error messages, not critique your use of color and perspective. Also, please make sure to post everything relevant to answering your question in your question, not behind a link. meta.stackoverflow.com/a/285557/2988 idownvotedbecau.se/imageofcode idownvotedbecau.se/imageofanexception — Jörg W Mittag 9 secs ago

Open letter to students with homework problems — matszwecja 56 secs ago

I wonder if SO's sister site softwareengineering.stackexchange.com would be more suitable? — k314159 13 secs ago

I was helping you. It doesn't deserve an answer as it's really using LUA not VBScript. VBScript programmers don't use colons as a normal thing. — Lundt 18 secs ago

Please consider to edit your question accordingly to the SO guidelines. For this purpose have a look at TOUR, How to Ask and How do I ask and answer homework questions? Open letter to students with homework problems — fantaghirocco 50 secs ago

@user692942 No VBScript programmers writes programs without indentation and CR. That is reserved for people using command lines. — Lundt just now

If you want help with your homework, please edit your question to show what you've come up with so far, and explain why it isn't working the way you expected it to. See also How do I ask and answer homework questions? and Open letter to students with homework problems — Klaus Gütter 1 min ago

I only created a dict of dataframes because that gives you access to their names. After all, it doesn't make sense to refer to 'fp_2015' in the resulting data, just because the variable was called fp_2015 (it's a common mistake among beginning programmers to involve the names of variables in their data, but there's no point and it causes all sorts of horrors maintaining your code). However, you could also just loop over the dataframes in a list and label them 1, 2, etc. - or whatever. — Grismar 22 secs ago

Please, post text as text, not as photographs of text. This is a website for programmers, not photographers. We want to copy&paste&run your code, copy&paste your inputs, read your outputs, and copy&paste&google your error messages, not critique your use of color and perspective. Also, please make sure to post everything relevant to answering your question in your question, not behind a link. meta.stackoverflow.com/a/285557/2988 idownvotedbecau.se/imageofcode idownvotedbecau.se/imageofanexception — Jörg W Mittag just now

arm has the architectural reference manuals arm arm. and then for each core/product a techincal reference manual, I would avoid the other manuals except for the amba/axi bus ones. the programmers reference ones cause as many problems as they solve. — old_timer 37 secs ago

Python's PEP 8 – Style Guide for Python Code recommends "Use 4 spaces per indentation level." This is so commonly followed that it's actually a mental speedbump for experienced Python programmers reading your code. — Steven Rumbalski 25 secs ago

@user20042973 I was asked by one of my part-time clients to look into this as their programmers couldn't figure it out. For now, it's just a proof of concept, and I think it will be something that runs on a regular basis, but I don't have the full details. — NealWalters 55 secs ago

Re, "Which design pattern violation caused this bug ? So It could be avoided in the first place." You aren't going to write bug-free code by paying attention to "design patterns." You have to pay attention to your own code. You have to think carefully about what it does. (E.g., what does it mean when two threads each want to set the same global variable to a different value.) Design patterns are just that: patterns that programmers tend to use again and again. Giving them names makes it easier for us to explain how our own code works when we happen to use one. — Solomon Slow 23 secs ago

@Yamile designing an encryption mechanism from scratch, particularly if you do not know much about encryption, is just asking for trouble! First you need to confirm if encryption is really necessary (legal requirement or a flagship feature of your product). If yes, then you still need to establish what vulnerabilities, attack vectors the encryption should protect you from. Then you need to design the encryption system and then, only then you start programming a solution. You are starting at the wrong end as you are asking programmers how to do it. — Shadow 41 secs ago

@dur You are welcome to delete my comments, delete this question entirely and even completely ban me from this platform if you have the power to do so. I heard about the elitism of Stack Overflow and about its hostility towards beginner programmers, but never met this attitude in person. Now that I had, thanks to you, I would say just this: I have been developing since I was 10 years old, that is 39 years now. I have enough self esteem and self awareness to know that I am a professional and as one I can tell you that your attitude is full of ego and unprofessional. Do what ever you want... — Asaf Gery 57 secs ago

Re “Why are you trying so hard to misinterpret everything and arguing with flawed logic?”: This answer contains an objectively false statement. Re “Some things are common sense and common knowledge…”: Students do not know what you know; they must be explicitly taught things. Re “You specifically cannot predict, what happens during UB”: Certainly I can, and have, and many other experienced software engineers can too. — Eric Postpischil 47 secs ago

@EricPostpischil Well in your last comment by saying that "you can predict what happens during UB" you showed that you don't understand the question nor the point of the answer as well as the discussion. I challenge you to predict what happens during UB from C++'s perspective. Not from an expert software engineer having knowledge of the given compiler and operating system and laws of physics and what not. Moreover there is nothing objectively wrong with my statement. — Jason Liam 16 secs ago

I don't agree. This should be on topic: - software tools commonly used by programmers; — user20132191 21 secs ago

(Aside: Dave, the "What have you tried?" link in your profile now redirects to a homepage. It looks like the author has deleted their software engineering posts). — halfer 9 secs ago

"How to solve it..." by writing the code to do it. Why should we do your homework for you? See How do I ask and answer homework questions? | Open letter to students with homework problems | How much research effort is expected of Stack Overflow users? — Pranav Hosangadi 41 secs ago

I think that defining "subjective" is itself a subjective exercise and is ultimately just a euphemism for "we don't want that here". There are many questions about best practices or "most pythonic approach" that have thousands of upvotes and no one brandies about "free work" and "subjective" when discussing them, if only because those are often great questions with great answers. The only difference here is that it's not strictly code based, but is still very much a software engineering question. — ticster 37 secs ago

@WeatherVane Nobody uses... Well, except legions of CS50 programmers, of course... — Steve Summit just now

@MarsAtomic less nesting, easier to understand error handling, often referred to as "return early pattern" or similar - softwareengineering.stackexchange.com/questions/18454/… — zapl 34 secs ago