Category Archives

Archive of posts published in the category: programming

Bitcoin stealer infected 700+ libraries of major programming language

In brief

  • Hackers targeted installation packages for the Ruby programming language.
  • RubyGems libraries were infected with malware; developers could accidentally install Bitcoin stealers.
  • Luckily, the attack was too obscure to ever work.

A cybersecurity firm discovered that over 700 libraries of the popular programming language, Ruby, contained malicious Bitcoin-stealing software.

ReversingLabs, based in Cambridge, Massachusetts, disclosed its findings in a blog post on Thursday. Back in February, it wrote, hackers placed malicious files inside a package manager called RubyGems—which is usually used to upload and share improvements on existing pieces of software.

The hackers were trying to trick developers into downloading malware by using a method called “typosquatting”, which consists of uploading malicious packages with similar names to regular ones. By just changing a few characters of a file name, the hope was that a developer would mistakenly download an infected package—unwittingly providing the hacker with access to their system. 

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SiriusXM To Celebrate Willie Nelson’s 87th Birthday With Two Days Of Programming …


Willie Nelson (Photo: SiriusXM)

SIRIUSXM will celebrate WILLIE NELSON’s 87th birthday with two days of special programming on WEDNESDAY and THURSDAY (4/29-30) on its “WILLIE’s ROADHOUSE” channel.

The programing will feature a two-hour special, dubbed “WILLIE NELSON’s Double Down 87th Birthday Bash,” airing four times over the two days, including the full audio from his 2012 TOWN HALL appearance in NEW YORK CITY hosted by JOHNNY KNOXVILLE (co-host of a weekly show on SiriusXM’s OUTLAW COUNTRY channel). Also included in the special will be a 2017 performance from the LUCK REUNION festival, held at NELSON’s private Old West town outside of AUSTIN, and a live painting demonstration from NELSON’s son MICAH, recorded with a live audience of SIRIUSXM subscribers during the rollout for WILLIE’s memoir, “Roll Me Up and Smoke Me When I Die.” The special will debut on APRIL 29th

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Top 30 Programming questions asked in Interview

LinkedList Programming Interview Questions

A linked list is another important data structure after array and String. It actually compliments array and whatever you cannot do with an array, you can do with a linked list.

For example, the array needs contiguous memory to store objects but the linked list doesn’t need that. It’s difficult to add and remove elements in an array because you need to shift existing elements but that is very easy with a linked list, as you just need to change the pointer to accommodate them.

But, nothing is free in this world. While linked list provides all these functionalities but the cost of that you lose the ability to search elements in constant time with index. Searching and element require traversing linked list, which means examining all nodes, thus cost around O(n) time.

14) How do you find middle element of a linked list in a

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Programming Languages InfoQ Trends Report

Key Takeaways

  • Elixir has entered the trend report at the innovator adoption phase. It is a functional, concurrent, general-purpose programming language that runs on the Erlang virtual machine.
  • We are seeing increased interest and innovation related to infrastructure-aware or cloud-specific languages, DSLs, and SDKs like Ballerina and Pulumi.
  • We believe that Rust has moved from the innovator to early adopter phase, driven largely by its uptake within the infrastructure and networking data plane space—for example, Habitat and Linkerd 2.0.
  • Python is continuing to gain in popularity, largely thanks to its roles within data science and teaching.
  • Swift for iOS development has moved to early majority, primarily because of the popularity of iOS as a mobile application runtime. Kotlin, although tracked separately in the JVM trend report, has seen similar movement to early majority in relation to Android app development.
  • For .NET we see a lot
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Processing: A Programming Handbook for Visual Designers (Second Edition)
by Casey Reas and Ben Fry.
Published December 2014, The MIT Press.
720 Pages. Hardcover.

» Order from MIT Press
» Order from Amazon

» Download Examples
» Errata

If you are an educator, you can request a desk/exam copy from the MIT Press website.

Since it first emerged in 2001, Processing has grown into a flourishing community of thousands of artists, designers, makers, and educators. It has redrawn the boundaries of art and technology, affecting communities in contexts as various as the classroom to the art museum to the hackerspace. After 12 years of development and being intensively taught in classrooms, the second edition of the Processing textbook was released in December 2014.

By teaching computer programming with the context of the visual arts, this book has introduced a new literacy with software, enabling designers and artists to create new media for the present, and to imagine future media

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What Is Quibi? How Much Does It Cost? Can I Get It For Free?

Chrissy Tiegen, Kevin Hart, Jennifer Lopez, and Idris Elba.

Chrissy Teigen, Kevin Hart, Jennifer Lopez, and Idris Elba definitely know Quibi.
Photo: Vulture, Getty Images and Shutterstock

Quibi has landed: The long-hyped, mobile-centric streaming platform devoted to short-form programming is now live, with dozens of programs set to roll out over the next few weeks. You may have seen the Super Bowl ad (remember football, from the Before Times?), or the omnipresent TV and online promos, or even Chrissy Teigen hyping her new show, Chrissy’s Court, on Twitter last week. But you may still be wondering just what the heck Quibi is, how it will work, and what it will cost. Vulture has you covered with an in-depth FAQ for the latest entrant in the streaming wars, with insights from Quibi founder Jeffrey Katzenberg.

It’s a subscription-based streaming platform designed to deliver short-form scripted and unscripted

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A Way to Learn Programming Principles

Mini-languages: A Way to Learn Programming Principles

Brusilovsky, P., Calabrese, E., Hvorecky, J.,
Kouchnirenko, A., and Miller, P. (1997) Mini-languages: A Way to Learn Programming
Principles. Education and Information Technologies 2 (1), pp.

Peter Brusilovsky
School of Computer Science, Carnegie Mellon University,
Pittsburgh, PA 15213 USA

Eduardo Calabrese
Dipartimento di Ingegneria del l’Informazione,
University of Parma, 43100 Parma, Italy

Jozef Hvorecky
University of Economics, 832 20 Bratislava, Slovakia

Anatoly Kouchnirenko

Department of Mathematics, Penn State University
University Park, PA 16802 USA

Philip Miller
School of Computer Science, Carnegie Mellon University,
Pittsburgh, PA 15213 USA,

Abstract: Mini-languages are a visually
intuitive, simple, and powerful way to introduce students to programming. They
are a good foundation for general computer science instruction, provide insight
into programming for the general population, and teach algorithmic thinking.
The goal of the paper is to provide an extensive review of the

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Programming Kit – Practice Programming


Copyright 2011 Lawrence Goetz

Here you can learn to write a program for a robot bug. A program is a set of commands for a computer to do. Writing a program means giving instructions to a computer for it to execute. A program is stored in the memory of a computer. Executing a program runs the program from the computer’s memory. The computer will follow the instructions given.

With you get practice programming a computer! Kids and adults can have fun moving the bug around and drawing different designs.

Parents: Ask your child to have the robot bug walk in a pattern (square, triangle, etc). Use the grid to count the boxes. Ask your child to have the robot bug walk to a particular spot on the screen.

Start Programming

Select a programming mode (default is Easy Mode).

– Select Advanced Mode to do

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The best programming languages to learn in 2020

These are the best programming languages to learn to land a great developer job and to earn more money. Also, find out developers’ favorite tools, free resources for coders, GitHub guides, and more.

Freelance programmer or developer working at home and typing source code with laptop

Image: iStockphoto/comzeal

While not every programmer may follow the oft-repeated advice to learn at least one new programming language each year, most developers will continue to build their skills throughout their career. Many programmers find their job requires them to periodically brush up on new programming languages and their dialects, software frameworks, and tools. Knowing what to learn and when can be difficult, particularly when new software frameworks and tools are created every day.

Must-read developer content

For an existing programmer, the trigger for learning a new language might be a particular problem that needs solving, the requirement to take over someone else’s code, or just curiosity about a new programming language generating buzz. For beginner programmers,

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Learn PLC Programming From Scratch (PLC I)

This course is designed to equip the novice with no prior PLC programming experience with the basic tools necessary to create a complete PLC program using ladder logic common to most current platforms.

Using the Rockwell software RSLogix 500 and FactoryTalk View Studio, we will be covering such topics as general controls, digital and analog IO, ladder logic programming, alarm / notification handling, HMI, emulation, best practices and more.

In the end, we will go through an entire, working PLC program and HMI line by line to solidify comprehension of the learning objectives.

Why Are There Four PLC Courses?

PLC I teaches you how to program with the focus on ladder logic, which is the most popular PLC programming language.  The goal is to teach you everything you need to know to make a PLC do what you want it to do.  You are also given all the software necessary

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