PiProgramming | Articles

Your browser does not support JavaScript!
Switching to non-JavaScript Version. Some features may not work as intended.

How to Install MinGW on Windows A Step-by-Step Tutorial for 2021 1. Download MinGW. 2. Run the mingw-get-setup.exe 2.1 Click Install 2.2 Change the Settings Most people should be fine with the default settings, but you can change them if you know what youre doing ;) 2.3 Wait for the Download to finish 3. Mark Packages for Installtion Most people will only need mingw32-base, mingw32-gcc-g, mingw32-gcc-objc and msys-base but once again - if you know what you are doing you could install all the other ones too.

How to detect and block bot traffic to your Website, Mobile app or API Client Side Detection 1. Navigator.Webdriver Flag This is probably one of the most well known Bot Detection Methods - The more juicy stuff that should actually help you catch bots and is not just here to complete the list, starts at point 2 below.The Navigator.Webdriver Flag indicates whether the browser is controlled by automation tools such as Selenium and is also the Source of that Chrome is being controlled by automated test software notification bar you get when using Selenium with Chrome.It is meant to be used as a standard way for websites to realize that automation tools are used.You can check for it using code that looks something like this:

Web Scraping vs Web Crawling What is the difference between them? Web Crawler Crawling would be essentially what Google, Yahoo, MSN, etc. are doing, looking for ANY information linking websites together.Web crawling is just a process of iteratively going around and visiting websites to find and retrieve web links from a list of starting Websites to build a database (index) of the layout of that site and the sites to which it links to.But crawlers dont just pick up every link on a website.

6 Ways to detect a headless Browser with JavaScript How to detect a Headless Browser A headless browser is a browser that can be used without a graphical interface. It can be controlled programmatically to automate harmless tasks, such as doing QA (Quality Assurance) tests.But Headless browsers are more commonly used to automate web scraping, fake user numbers and advertisement impressions or to look for vulnerabilities on a website.That is why you probably dont want them on your site.

The Best Software Every Reverse Engineer Should Have for Cracking Software Every reverse engineer, malware analyst or simply a researcher eventually collects a set of utility software that they use on a daily basis to analyze, unpack, and crack other software. This article will show you mine, so you dont have to hunt for them on your own. It will be useful to anyone who has not yet collected their own set of tools and is just starting to look at the subject or people who want to extend their current set of tools. Debuggers & Disassemblers First, some Definitions:Disassembler: A disassembler is a software tool which converts machine code into a human-readable code.Debugger: A Debugger is a software tool which allows the user to view and change the running state of a program. Debugging and disassembling the assembly code of an app is the answer to everything (Besides 42).

How to change the User Agent AT and BEFORE Runtime using Selenium in Python Before Runtime Setting a User Agent BEFORE RUNTIME is pretty straight forward using WebDriver Options WebDriver Profiles that are available for Chrome (ChromeDriver) Firefox (GeckoDriver).You can invoke Google Chrome with a user agent using the command line and following command without even using Selenium: chrome --user-agent=WhateverBut if you want to use this with selenium you can give the same Arguments using the following Python Code for Google Chrome:

Solve Selenium Google Login Block You were just scraping away, getting some data, testing some things, maybe not even using the Google search - And then this error pops up: Were sorry, but your computer or network may be sending automated queries. To protect our users we cant process your request right now. Or this Error: .. Sometimes you can fix it through: Disabling Two-Factor Authentication for this Google account.

10 Ways to hide your Bot Automation from Detection How to make Selenium undetectable and stealth A lot of sites will block your web scraping automation because it puts an unwanted load on the servers of the site and raises the cost of maintaining the site without giving back any value. A business wants to use its resources to serve customers and not people who just want their data.Thats why theyre tracking irregular browsing activities to block your web scraping efforts. But youre not giving up so easily right? Thats why Ive put together a list of 7 things you can do to hide your automation using Selenium and make it undetectable as well as look like a real person.

How to protect JavaScript code from reverse engineering This article is a shorter JavaScript adaptation, based on this article, where I talk about how to reverse engineer different types of programming languages and how to protect against it in multiple languages.If you are interested in learning how people reverse engineer your code and stuff like that you should check it out.Obfuscation Code obfuscation is an intentional act of making source code difficult to modify and understand by renaming stuff, using hard-to-read functions (hard to read for humans, not for computers), blurring code flow, inserting dead code, ordering code randomly, and more.There are obviously several Pros and cons to Code Obfuscation. See following:Pros 1.

How to protect Source Code from being stolen by Remote Developers You may have experienced the problem of not trusting your coders, and how you can prevent your source code from being leaked or stolen - At the beginning Ill only speak about different ways to secure your code, and only at the end of the articles about the morality of not trusting your developers, and whether its worth it.Modularity Access Control This first approach will actually protect most of your source code from being viewed and edited by unwanted people.But What is a module and modularization? Modularization is actually more a software development concept that helps to organize and deploy software.

How to keep a process running in Background after closing SSH connection and Terminal (Putty, OpenSSH, Kitty, etc.) In the following I will show you how you can detach a process from the session and keep a ProcessCommand alive when you close your Linux TerminalHave you ever wanted to run a long process or a bot in the background on your Linux server even when you close the connection? Or are you scared of suddenly losing your connection and losing the work of a long-running task?Luckily, there are 2 ways of accomplishing this.The first is using screen, a terminal multiplexer - a terminal multiplexer that lets you start a screen session and then open any number of virtual terminals within that session. Processes running in these virtual terminals screens will continue to run even though their window is not visible or when you disconnect. The alternative to screen is actually more of a way of scheduling processes on Linux - Cron Jobs.

Compiler VS Interpreter VS Jiter VS Not Languages Introduction to Programming Languages Types Generally, you code with a high-level language. A high-level language is one that we humans can understand more easily. The computer does not, however, understand high-level languages. It only understands programs written in 0s and 1s in binary - this is called machine code. To convert source code into machine code, you use either a compiler, an interpreter or a mix of both (Jiter Languages). There are differences between all of these three approaches.

Ultimate Introduction to cracking Software and how to protect against it Reverse Engineering Cracking (also referred to as reverse engineering) is the process of finding software components and functionalities in order to modify find vulnerabilities disable features that are undesired by the cracker. This can be used for shady things like disabling copy protection features, but also for positive Things like removing bugs from an otherwise loved but old and not any more supported application, improving security, retrieving lost source code, and even researchinganalyzing computer virusesmalware.Today, were going to take a look at how you can start reverse engineering software and how you can defend against others cracking your software.This way (whatever side youre on ?) you understand what the other side is doing and how to combat it. 1. How to crack Software 1.1 Decompiling The first method of cracking Software is Decompiling.

How to generate Random Values in all SQL Language flavors Every coder will have to generate some dummy data for their database or randomize de-identify existing data for testing purposes at some point in their career.But most programmers fall into the trap of reinventing randomization functions and end up with something that isnt random at all. I would suggest you stick to the built-in functions.Its pretty amazing what you can do out of the box with SQL.That is why Ive created a list of pretty much every use case I can think of in which you would have to create Random Data, all being built on the basic RAND() function. Note that I tested the more complex code in MySQL and that RAND() has to be replaced according to your SQL flavor. See the first table below which shows how to generate a random value between 0.0 <= x < 1.0 in almost every SQL Flavor - you can use this to adapt my code for your use case. Basic random value

7 SQL Tips, Tricks and Rules with Examples to optimize your Queries If you are a programmer, you might have come into touch with SQL in one way or another at some point in time.Especially if youre a Data Scientist Analyst, you probably had contact with it, but then you probably decided to use much cooler and fancier ways to sort data using pandas or tidyverse.However, with huge datasets being collected and churned out every day, as long as the data is in an SQL compliant database, SQL is still the quickest way to help you investigate, sort and aggregate in order to get a thorough understanding of your data.By slicing and dicing with SQL, you will be able to identify patterns that are worth looking at further, which can often lead to a redefinition of the research population and to variables that are considerably smaller than the initial set.

<br>, <br >, and <br> The Guide to the break Tag in HTML Should I use br, br , or br ? According to the XHTML guidelines you should either use br or brbr since XML doesnt allow leaving tags open.And following the HTML 5 Reference Draft, it tells you that for normal HTML br is self-closing and expected, but that a closing slash is allowed, but also that brbr is not valid and will be interpreted as two line breaks.Conclusion You should definitely use br to stay backwards-compatible with older browsers and choose yourself between br or br , whichever pleases your aesthetics since dev.w3.org tells you that one or more space characters are optional. How do I use br ? The br Tag can be easily used by just placing it at whatever position you want your line break to be.

6 Actually useful Coding Project Ideas You Can Start Working on Today The problem with most Project Idea lists is that the ideas on them may be neat if you want to learn something new, but they are most of the time completely USELESS.That is why I created a list of cool side projects which will help you learn a lot but will also create something useful at the end.Working on a side project is one of the best ways to develop yourself as a developer. You can broaden your skills by experimenting with new tools, techniques and maybe even a new programming language youve never used before.And because the hardest part for most people is finding a cool side project that they could work on, Ive listed 6 ideas for side projects that you could start working on today. 1. Expenses Tracker If youre like me, you want to keep track of your expenses in a very light-weight fashion.

THE 12 Most Interesting free Online AI Courses from MIT, Stanford, Amazon, Harvard, and others Most of the work positions in Deep Learning, Machine Learning, NLP, Computer Vision, or basically any of the Artificial Intelligence (AI) work require you to have at least a Bachelors degree in Computer Science or some related area.But if youre from the United States or some other country where most people cant afford to go to the best universities, you need to find other ways to get yourself educated.Fortunately, nowadays you dont have to get a formal degree with the short supply of qualified professionals from these fields - demonstrating your expertise in other forms, such as the courses youve completed, is enough to get you a position.But with that comes a lot of people all trying to sell their own Artificial Intelligence course.

Simple and Foolproof ways to Shrink, Compress, and Accelerate your Deep Learning, Neural Network, etc. Artificial Intelligence Models. During recent years, we have seen more and more artificial intelligence apps transition to mobile devices such as smartphones, smartwatches, etc. and ever-increasing neural networks with more nodes and layers being considered (GPT-3 is a recent example of this).This raises the major problem of implementing AI models on portable devices with limited resources - a large number of weights in models typically makes it impossible for models to be deployed in low storage and memory environments.Thats why I have put together the following techniques for you - not only to achieve higher model compression but also to reduce the computing resources required (e.g. CPU, Memory, Battery Power, Bandwidth). This will help your model deployment on cell phones, IoT devices, and so on.

17 Binary Tree Coding Practice Problems from popular Programming Interview Questions What even is a Tree Data Structure? A tree is a special type of hierarchical data structure that is connected and does not contain any closed paths. This helps you to store information easily in a hierarchical layout. Depending on whether the edges of the tree have an uniform direction or not, the tree can be an undirected tree, a directed tree, or an Arborescence. (By the way, if you dont already know. When i say edges i refer to the lines between the dots and when i say nodes i mean the dots)

5 Interesting FREE AI Books for absolute Beginners by Springer After the pandemic, Springer has released 408 free books on a wide range of topics. The List includes a broad variety of technological and scientific topics. They can all be downloaded fully free of charge as a PDF on the official Springer Website. It is currently unclear how long they will stay free so you should hurry up. That is also why Renan Xavier Cortes has created a program that can download all 8 Gigabytes of Books at once. In order to save you some reading time, I have again put together a list of the top five best Artificial Intelligence books available for free on the Springer website.

The Applications of Stack and Queue What is a Stack? A Stack is a commonly utilized abstract data type and data structure that obeys the LIFO (Last in First out) strategy. This ensures that the last added item will be removed first. A stack allows for push and pop operations. The push function adds another item to the stack whereas the pop operation removes an item from the top position.

Raspberry Pi Python3 Introducation for absolute beginners 1. Your first Python3 program The Raspberry Pi comes with all the tools you need to start programming in Python. This tutorial will use Idle 3 which is the Integrated Development Environment ( IDE ) for Python 3. To get going, launch Idle3 from the desktop icon or from the Programming menu.This is the Python 3 Shell of yours. You could type your Python code directly into this and run it line by line while you typed it. It will become unmanageable though when you start writing larger programs, so lets create a python file that we can write our code to and then execute when we want to.

10 Interesting and Impressive AI projects for absolute Beginners (with Python Source Code) Artificial Intelligence has become certainly part of our lifes now. We knowingly or unknowingly use it in our day-to-day life as in recommended films, image recognition, speech recognition, sites-recommended products etc. Thats why you also need to start learning about it. You could start by checking out the 5 Best Artificial Intelligence Books in 2020. Yet its not enough to understand just the Theory. Thats why students are expected to try to complete some artificial intelligence projects. That is why, if youre a newbie, the best thing you can do is to spend some time on some real Artificial Intelligence projects.

Database Disk Space Calculator Why do you need to approximate the size of a database? Estimating the size of the database can help you determine the storage setup that you would need to provide the sufficient physical amount of disk space used to hold the data and to provide the performance that your applications need. Estimating the magnitude of the database will also help you decide how the database architecture needs to be optimized. For example, you can decide that the approximate size of the database is too big to be applied in your organisation and that further refinement is needed. This will also help you to enhance the efficiency of the database querys.But dont forget:Premature optimization is the root of all evil. -Donald Knuth

5 Best Artificial Intelligence Books in 2020 Ive put together the top five best Artificial Intelligence books available. And to be frank, it has been difficult to find those books. Between all the A.I conspiratorial books, there really wasnt much left to choose from. These books are measured on the basis of reliable community reviews and the quality of the content that I noticed while reading every book for myself, because you shouldnt waste your time on bad content. You will never really understand the field of Artificial Intelligence, nor will you be able to apply it very well when you read too complicated and confusing books. These books will cover subjects such as Mathematical Optimizations, Neural Networks, Economics Probability and Logic. Theyre all very useful today in the real world.

Difference between System Software and Application Software You may already be aware that software is a collection of instructions or programs that instruct the computer to perform specific tasks. Software is essentially a term commonly used to describe computer programs. Applications, programs, instructions and scripts are all terms that are often used to describe software as well. Software can be broken down into two parts: system software and Application software. Here are some basic differences between System Software and Software Application.

5 ways I avoid procrastination I think weve all been through the Coders Block or through chronic procrastination. Im going to share with you my best tips and tricks on how to overcome this. Basically, how to do things even when you feel that your body is like an immovable object on the couch.Chronic procrastination usually comes in when youre trying to learn something new or start a new project and just thinking about getting to it feels like a chore. You kind of feel like youre going to have to start rolling a massive rock up a hill, and your mind knows that its going to take a lot of hard work to complete the task.

Introduction to Installing and Programming Minecraft Pi Edition Minecraft Pi Edition is a version of the popular open world sandbox game for the Raspberry Pi. Based on the mobile version of the game, the Pi edition has the added feature that you can program it. It is free of charge and can be downloaded from the Minecraft Pi Edition page on the Minecraft website.This currently only supports creative mode in a world of 256256 blocks, just like the pocket edition. It comes with an Application Programming Interface ( API) for both Python and Java, but there is also a Ruby interface for download from the website.