Programming Leftovers
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Podcast: COBOL development on the mainframe
Nic reached out when COBOL hit the news this spring to get some background on what COBOL is good for historically, and where it lives in the modern infrastructure stack. I was able to talk about the basics of COBOL and the COBOL standard, strengths today in concert with the latest mainframes, and how COBOL back-end code is now being integrated into front ends via intermediary databases and data-interchange formats like JSON, which COBOL natively supports.
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What I learned while teaching C programming on YouTube
The act of breaking something down in order to teach it to others can be a great way to reacquaint yourself with some old concepts and, in many cases, gain new insights.
I have a YouTube channel where I demonstrate FreeDOS programs and show off classic DOS applications and games. The channel has a small following, so I tend to explore the topics directly suggested by my audience. When several subscribers asked if I could do more videos about programming, I decided to launch a new video series to teach C programming. I learned a lot from teaching C, and in the process, I came across some meaningful takeaways I think others will appreciate.
Make a plan
For my day job, I lead training and workshops to help new and emerging IT leaders develop new skills. Outside of regular work, I also enjoy teaching as an adjunct professor. So I'm very comfortable constructing a course outline and designing a curriculum. That's where I started. If you want to teach a subject effectively, you can't just wing it.
Start by writing an outline of what topics you want to cover and figure out how each new topic will build on the previous ones. The "building block" method of adding new knowledge is key to an effective training program.
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Google's Flutter 1.20 framework is out: VS Code extension and mobile autofill support
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Google Engineers Propose "Machine Function Splitter" For Faster Performance
Google engineers have been working on the Machine Function Splitter as their means of making binaries up to a few percent faster thanks to this compiler-based approach. They are now seeking to upstream the Machine Function Splitter into LLVM.
The Machine Function Splitter is a code generation optimization pass for splitting code functions into hot and cold parts. They are doing this stemming from research that in roughly half of code functions that more than 50% of the code bytes are never executed but generally loaded into the CPU's data cache.
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Modernize network function development with this Rust-based framework
The world of networking has undergone monumental shifts over the past decade, particularly in the ongoing move from specialized hardware into software defined network functions (NFV) for data plane1 and packet processing. While the transition to software has fashioned the rise of SDN (Software-defined networking) and programmable networks, new challenges have arisen in making these functions flexible, efficient, easier to use, and fast (i.e. little to no performance overhead). Our team at Comcast wanted to both leverage what the network does best, especially with regards to its transport capacity and routing mechanisms, while also being able to develop network programs through a modern software lens—stressing testing, swift iteration, and deployment. So, with these goals in mind, we developed Capsule, a new framework for network function development, written in Rust, inspired by Berkeley's NetBricks research, and built-on Intel's Data Plane Development Kit (DPDK).
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This Week in Rust 350
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Firefox extended tracking protection
This Mozilla Security Blog entry describes the new redirect-tracking protections soon to be provided by the Firefox browser.
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Karl Dubost: Browser developer tools timeline
I was reading In a Land Before Dev Tools by Amber, and I thought, Oh here missing in the history the beautifully chiseled Opera Dragonfly and F12 for Internet Explorer. So let's see what are all the things I myself didn't know.
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Daniel Stenberg: Upcoming Webinar: curl: How to Make Your First Code Contribution
Abstract: curl is a wildly popular and well-used open source tool and library, and is the result of more than 2,200 named contributors helping out. Over 800 individuals wrote at least one commit so far.
In this presentation, curl’s lead developer Daniel Stenberg talks about how any developer can proceed in order to get their first code contribution submitted and ultimately landed in the curl git repository. Approach to code and commits, style, editing, pull-requests, using github etc. After you’ve seen this, you’ll know how to easily submit your improvement to curl and potentially end up running in ten billion installations world-wide.
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