The author continues their multi-part series on dynamic programming in Haskell and explores the idea of a magic memoization function that can automatically generate a memo table for any given recursive function, making it faster. While it seems impossible, the author breaks down the concept and provides a solution that sticks the call to memo […]
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Many Unix-like/POSIX systems have issues with handling filenames and pathnames in shell scripts, which can lead to bugs and security vulnerabilities. Some shell programming books and even the POSIX standard sometimes teach the incorrect way to handle filenames. So, it’s crucial to understand how to handle filenames correctly to avoid potential harm. This essay provides […]
In 1979, Tyrgve Reenskaug published a paper about a design pattern he invented for developing applications with a graphical user interface, called MODELS-VIEWS-CONTROLLERS. The original document described each component in its own section and had the following elements: Models, Views, Controllers, and Editors. However, the modern interpretation of MVC has evolved significantly, and each variation […]
In order to be a successful programmer, one needs to understand how to manipulate bits, including individual bits within a register. Programming with integers can be done using 8-bit, 16-bit, 32-bit and 64-bit integers. Go has several important binary operators that are used to manipulate bits, including bitwise AND, OR, XOR and AND NOT, as […]
A 96-page report, Security Analysis of Georgia’s ImageCast X Ballot Marking Devices, authored by J. Alex Halderman and Professor Drew Springall, has been released by the U.S. District Court for the Northern District of Georgia, demonstrating numerous security problems affecting Dominion voting equipment used in Georgia and other states. The report, part of a voting-rights […]
The Cloud Appreciation Society is an online community for people who love the sky, including artists, scientists, cloudspotters, and dreamers. The website offers a range of features, including a Cloud-a-Day app, a Memory Cloud Atlas created by cloudspotters around the world, downloadable lesson plans for teachers, and a book called A Cloud A Day. Members […]
Regular napping can significantly benefit the brain, according to a new study from University College London. Results showed that people who nap regularly have 15 cubic centimetres larger brains on average – the equivalent of staving off brain aging by three to six years. However, the research found that naps should be kept to under […]
LCD technology has reached its pinnacle and all new research and development into displays is focused on self-emissive displays such as OLED and MicroLED, as well as on backlight technology like Mini-LED. While demand for lower-cost LED-LCD TV and monitors will continue for a while, future improvements will likely focus on OLED development. Bob Raikes […]
Cryptopals is a series of exercises designed to teach people about real-world cryptography by presenting problems to solve. The challenges are derived from weaknesses found in modern cryptographic constructions and systems. Participants are given enough information to learn the underlying crypto concepts themselves, making it unnecessary to know any crypto or math before starting. These […]
PostgreSQL developers are contemplating an architectural overhaul to replace its process-oriented model with a multi-threaded one. Although there is optimism about such a change, especially given the limitations of the process model, some software developers are not convinced, voicing concerns over the cost in code, new bugs and maintenance. There are also suggestions that the […]