#Programming and software development

[securemycareer]

Top Skill development courses for Students to get Good Placement

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Now a days, Educated Unemployment is a big concern for a country like India. Considering the largest number of youth population in world, India has huge potential to be a developed nation in the next few years. But, it can be only possible if youth contribute in economy by learning skills which are in global demand. However, course structure in colleges are outdated and do not make students job…

[interesting-factz]

Python installed successfully 🐍😎

[code-es]

Coding resource!

exercism.org

A free website where you get specific problems to methodically learn small concepts of a programming language. Do 10 minutes to 1 hour every day, and then you will keep practicing every day, and you will be able to use the skills you learn in your real projects. They walk you through the problem all the way, and it's a super good way to learn!

[foolishmortal]

tfw you fix a weird engineering bug

[computer-nerd-girl]

[izicodes]

C# Study Links | Resources ✨

As I am starting to relearn C#, I thought why not share some links that have helped me in the past and what new ones I will be using this time to learn! I already made a similar resource post (post 1 | post 2) for C# in the past but why not a new one? 🤗

Microsoft Learn - LINK

C# Station - LINK

YouTube - LINK

SoloLearn - LINK

Codecademy - LINK

Learn C# - LINK

C# Yellow Book - LINK

C# Programming Guide - LINK

Tutorials Point - LINK

Roadmap to ASP.NET Core Developer (C#): LINK

C# Subreddit - LINK

Dot Net Perls - LINK

C# Coding Conventions - LINK

The Ultimate C# Guide For Beginners - LINK

That's all for now! If this does interests you, do check out the other posts (1 | 2) I made of other C# resources!

Happy coding/programming! 😎💻👍🏾

[agent-z-coding]

oh the programmer urge to be born in the 1970's so you could invent everything yourself

[nixcraft]

[hayacode]

I was playing Persona 5 the another day and I saw this!

I will post it here as a reminder to have my own way of coding 💻✨

[codingquill]

Network switches

What’s a network switch ?

A switch is a device used in computer networks to connect multiple devices together within a single local area network (LAN). Its main role is to facilitate communication between different connected devices, such as computers, printers, servers, IP phones, etc.

It is a mini-computer which is made up of RAM, ROM, flash RAM, NVRAM, a microprocessor, connectivity ports and even an operating system.

RAM

RAM (Random Access Memory) contains the current configuration of the switch and temporarily stores the MAC address table, which is then processed by the microprocessor.

Microprocessor

The microprocessor is the heart of the switch, responsible for data processing, including switching and creating links between multiple devices.

External memories

External memories, such as flash RAM, ROM, and NVRAM (Non-Volatile RAM), store configuration files , different versions of the IOS , etc ...

Ports

The switch ports are the communication interfaces of the switch. There are several of them, generally 24 for a Cisco switch. Each port is associated with an LED which indicates its status and activity.

How does it work ?

Now how does a switch work to transfer information from one machine to another?

Suppose we have 4 machines: A, B, C and D connected to our switch in ports 1, 2, 3 and 4 as follows:

The switch only works with MAC addresses , so basically we have an empty MAC address table stored in RAM as soon as the switch starts up which looks like this : 

Transmitting data from machine A to machine B happens in the following steps:

Machine A sends a frame to machine B

Once this frame arrives at port 1 (which is the one linked to A), the switch reads the source MAC address and stores it in the MAC address table

The switch reads the destination MAC address and looks for it in the table, if it is not in the table, it broadcasts to all the active machines connected to the switch except the source one.

If the port linked to the machine we want is active, it sends a response frame from which the switch reads the MAC address we were looking for (@B)

Once done, it records the MAC address of B in the table.

This process repeats until the switch reaches what is called "MAC address table stability", that is to say it knows all the MAC addresses of the connected machines and has no more need to broadcast.

Starting and configuring a switch

When it comes to booting a switch, the process is similar to that of a traditional computer system:

POST (Power-On Self Test): The switch performs proper functioning tests on all hardware.

Loading IOS (Internetwork Operating System): The switch operating system is loaded.

Loading the configuration. At this stage we have two cases:

Either the switch already has a startup configuration defined and stored in NVRAM

Either the switch is blank and it is up to us to define the startup configuration when it goes to setup mode

Switch configuration

The configuration of a switch is done through different modes, such as user mode, privileged mode and global configuration mode, which allows access to specific configuration modes, such as interface mode, routing mode, line mode, etc.

And to do all this of course you must first connect the switch with the machine via the console cable and open a terminal emulator

💡 It should be noted that the only machine that can configure the switch is the one connected to it by a console cable, the others are only hosts.

[blackjackkent]

Random question for the coding folks...

If I were to just straight up like... offer free programming tutoring, are there folks out on Tumblr who would be interested?

[code-es]

The women who laid the foundation of tech

EDIT: I noticed that this post ended up being reblogged by terfs. If you're transphobic this post is not for you to reblog. I want to celebrate everyone who is not a cis man in this industry, including trans women and nonbinary people in tech, and it was my mistake to only include cis women in this post when there are so many trans women and nonbinary people who have done great things in tech as well. Trans women are women and just as important.

Here you can read about trans ppl in tech, and please do:

https://www.thecodingspace.com/blog/2022-03-01-six-trans-programmers-who-shattered-the-lavender-ceiling/

https://abcnews.go.com/Business/transgender-tech-visibility-obstacles-remain/story?id=76374628

The morning of women's day i attended a super inspiring seminar about being a woman in tech at a large tech company in my city, and now I'm inspired to share what I learned with all of you!

I didn't have time to finish this post on women's day, but it's not too late to post now: every day is a day to celebrate women!

Women actually laid the foundation for a lot of the tech industry.

For example, the first computer, ENIAC, was programmed completely by women! While men were the behind the scenes engineers, it was women who did all the actual programming of ENIAC.

The women who made up the team responsible for programming it were called Jean Bartik, Kay McNulty, Betty Holberton, Marlyn Wescoff, Frances V. Spence and Ruth Teitelbaum.

I think one woman who is finally getting her overdue recognition is Ada Lovelace. She was a mathematician (also often referred to as the first programmer) who created the first algorithm in 1842, which wasn't recognized until 1953! However, since none of her machines were ever completed it was never tested in practice during her time.

She has since been celebrated by giants such as google, and she has given name to a programming language (Ada). She was also the first person to write about what is today known as AI. Back when she was practicing, computers were simply thought of as calculators. But she had an idea that if computers can understand numbers, then that can be translated to letters, and in turn that can lead to computers being able to handle words, and eventually even write, draw and create music.

Hedy Lamarr was a famous Hollywood actress in the 40's, but she was also an inventor who laid ground for what we use today for Wi-Fi, Bluetooth and GPS services.

During WW2 she wanted to contribute positviely to the military efforts against the Nazis, and she tried to figure out how to radio control torpedoes. In 1942 she patented her technology "Secret Communications System", also known as frequency hopping, which laid the foundation for the technology we use today for Wi-Fi, GPS and Bluetooth. It wasn't until 1962 that it was first used for its intended purpose, during the cuban missile crisis.

Grace Hopper invented the first compiler, called A-0, in 1955, and was also part of the Univac team, which was the company also responsible for building ENIAC. She also initiated work on the COBOL programming language.

She was also the one to coin the term "bug" in 1947. Computers back then had lights to visualize their working process (which was also a womans idea to implement btw) and bugs would be attracted to the lights, but usually that was no issue - until a bug made its way into a tube which caused the computer to stop working. Hopper taped the bug to a piece of paper and logged what caused the crash - a bug.

Dorothy Vaughan (left), alongside colleagues such as Katherine Johnson (middle) and Mary Jackson (right), was a mathematician at NASA (called NACA when she started) who worked on the orbit for the first ever manned spaceflight and later also on Apollo 11 that would take humanity to the moon!

When Vaughan started at what was then called NACA, segregation was still prevalent in the US and she was not allowed in the same areas in the office as her white colleagues. Another department was formed for the black staff, and when the director of said department unexpectedly died, she was appointed as the new director and thus became the first ever black woman at that position at NACA/NASA. In 1958 when NACA becomes NASA segregation is forbidden, and that is when Vaughan and her colleagues Johnson and Jackson started working on programming the orbit and later also Apollo 11.

Continuing on the same track of NASA and space, Margaret Hamilton was the Apollo project's first actual programmer. Hamilton became the director of software engineering at NASA in 1965, and she was also the person to first coin the term !

In the image above, she stands next to all the handwritten code that was used to send humanity to the moon. During the early stages of the project when she would speak of "sofware engineering", software development was not taken as seriously as other forms of engineering, and it wasn't regarded as a science, either. She wanted to legitimize software development as an engineering discipline, and overtime the term "software engineering" gained the same respect as any other technical discipline.

And lastly, if you're a woman in STEM, I want to highlight and celebrate you! Being a woman in a male dominated industry is not easy, we often suffer from sterotype threat and are not seen as our own individuals, but rather "the woman" in a room full of men. But just as these women, I'm sure you will achieve greatness!!

Here are some additional resources if you'd like to learn more:

https://www.history.com/news/coding-used-to-be-a-womans-job-so-it-was-paid-less-and-undervalued

https://digitalfuturesociety.com/programming-when-did-womens-work-become-a-mans-world/

And this was mainly my source for this post, but it's unfortunately only available in Swedish:

Thank you for reading ✨

[omeletcat]

i got an old laptop from my grandpa and was googling about it, and the wikipedia page for the micro-soft acer aspire has an image of the acer aspire with the wikipedia page, containing the image of the acer aspire with the wikipedia page, containing the image of the acer aspire with the wikipedia page, containing the image of the acer aspire with the wikipedia page, containing the image of the acer aspire with the wikipedia page, containing the image of the acer aspire with the wikipedia page, containing the image of the acer aspire with the wikipedia page....

[computer-nerd-girl]

[izicodes]

Wix Learn's Free Web Accessibility Certification | Resources ✨

Hiya! 💗 Today, I stumbled upon an absolute gem that I wanted to share with all of you. If you're learning about web design and inclusivity as I am, this is something you might want to look into~!

Introducing the Web Accessibility Course by Wix Learn - a game-changer for anyone striving to create websites that cater to all users, regardless of impairments. This comprehensive course covers everything you need to know to build an inclusive online space that leaves no one behind. AND IT COMES WITH AN EXAM AND CERTIFICATE (all free too hehe).

In this course, you'll gain mastery over essential skills, including:

🌐 Creating Inclusive Sites: Learn the best practices to make your websites accessible to people with various impairments, ensuring equal access for everyone.

📚 Accessible Title Tags and Headings: Dive into the world of proper title tags and heading structures, making navigation a breeze for every visitor.

👁️‍🗨️ Crafting Alt Text and Alternative Media: Discover the art of writing meaningful alt text and incorporating alternative media, providing a seamless experience for those with visual challenges.

⚙️ Optimizing Navigation for Assisted Technology Users: Enhance site navigation for individuals relying on assisted technologies, making their browsing experience smooth and efficient.

💬 The Power of an Accessibility Statement: Learn to create a compelling accessibility statement, showcasing your dedication to inclusivity and informing visitors about your website's accessibility features.

They even have prep courses for the exam! 🤗✨

Here's the link to the course: LINK

Hope this helps someone out there, I will be trying it out and seeing how it goes! 👍🏾

[agent-z-coding]

I HAVE FINALLY SUCCEEDED

IT WORKS!!! IT WORKS!!!!!

[4, 5, 4.3] -> add BECOMES 13.3!!!!!!!!!!

YOU PEOPLE I HAVE DONE IT

source code will be coming soon (as soon as i get more helper functions working.

For now, PLEASE contribute if you can. Even as little as suggesting some helper functions could help me a ton.

Contribute below:

Open a PR, An issue, Anything, Just mention what the language lacks and you don't even need to implement it yourself, I'll add it to the To-Do list and get working on it ASAP.

Join the discord server, I will be posting updates and asking for suggestions and providing beta builds: https://discord.gg/JxnKn9jd