The original poster questions whether modern RPN calculators could, or should, replace the ubiquitous TI-84 graphing calculator, particularly in educational settings. They highlight the TI-84's shortcomings, including its outdated interface, high price, and limited programming capabilities compared to modern alternatives. They suggest that an RPN-based graphing calculator, potentially leveraging open-source tools and modern hardware, could offer a more powerful, flexible, and affordable option for students. They also acknowledge potential hurdles, like the entrenched position of the TI-84 and the need for widespread adoption by educators and institutions.
Taner Şener, the creator of FFmpegKit, a commercial wrapper around FFmpeg for mobile development, announced that he's ceasing development and support. Due to complexities in maintaining FFmpeg across various architectures and operating systems, increasing maintenance burden, and inadequate revenue to justify continued development, he's chosen to shut down. Existing clients can continue using their purchased licenses, but future updates and support are discontinued. The core issue is the difficulty of sustainably supporting a complex project like FFmpegKit, even as a paid product, given the rapid pace of mobile development and the substantial engineering effort required for compatibility. While acknowledging the disappointment this will cause some users, Şener emphasizes the unsustainable nature of the project's current trajectory and thanks users for their support over the years.
Hacker News users discuss the author's decision to discontinue FFmpegKit, an iOS/Android FFmpeg library. Several commenters express disappointment, highlighting FFmpegKit's ease of use compared to alternatives like MobileFFmpeg. Some suggest the decision stems from the difficulty of maintaining cross-platform compatibility and the complex build process involved with FFmpeg. Others speculate about the author's motivation, including burnout or lack of financial viability. A few offer alternative solutions or express hope for a successor project. The lack of clear documentation for building FFmpeg directly is also a recurring concern, reinforcing the value of projects like FFmpegKit.
The blog post explores the potential of the newly released S1 processor as a competitor to the Apple R1, particularly in the realm of ultra-low-power embedded applications. The author highlights the S1's remarkably low $6 price point and its impressive power efficiency, consuming just microwatts of power. While acknowledging the S1's limitations in terms of processing power and memory compared to the R1, the post emphasizes its suitability for specific use cases like wearables and IoT devices where cost and power consumption are paramount. The author ultimately concludes that while not a direct replacement, the S1 offers a compelling alternative for applications where the R1's capabilities are overkill and its higher cost prohibitive.
Hacker News users discussed the potential of the S1 chip as a viable competitor to the Apple R1, focusing primarily on price and functionality. Some expressed skepticism about the S1's claimed capabilities, particularly its ultra-wideband (UWB) performance, given the lower price point. Others questioned the practicality of its open-source nature for the average consumer, highlighting potential security concerns and the need for technical expertise to implement it. Several commenters were interested in the potential applications of a cheaper UWB chip, citing potential uses in precise indoor location tracking and device interaction. A few pointed out the limited information available and the need for further testing and real-world benchmarks to validate the S1's performance claims. The overall sentiment leaned towards cautious optimism, with many acknowledging the potential disruptive impact of a low-cost UWB chip but reserving judgment until more concrete evidence is available.
Alexey Starobinskiy's blog post, "Goodbye, Slopify," details his decision to discontinue Slopify, a side project offering simplified Spotify playlists. He explains that maintaining the service became too time-consuming and costly, especially with the increasing complexity of handling Spotify's API and data updates. Despite initial success and positive user feedback, the project's unsustainability, combined with Starobinskiy's desire to focus on other ventures, ultimately led to its shutdown. He expresses gratitude to his users and reflects on the valuable lessons learned throughout the project's lifespan.
Hacker News users generally agreed with the author's criticisms of Slopify, echoing frustrations with the app's user experience, bugs, and lack of responsiveness from the developers. Several commenters shared similar experiences with the app crashing, losing data, and encountering unhelpful or non-existent support. Some speculated on technical reasons for the app's poor performance, suggesting issues with Electron or database choices. Others pointed to alternative note-taking apps like Obsidian and Logseq as preferred replacements. A few users expressed disappointment with the apparent abandonment of the project, having previously enjoyed its unique features. The overall sentiment was one of resignation and a search for better alternatives.
TypeScript enums are primarily useful for representing a fixed set of named constants, especially when interfacing with external systems expecting specific string or numeric values. While convenient for basic use cases, enums have limitations regarding tree-shaking, dynamic key access, and const assertions. Alternatives like string literal unions, const objects, and regular objects offer greater flexibility, enabling features like exhaustiveness checking, computed properties, and runtime manipulation. Choosing the right approach depends on the specific requirements of the project, balancing simplicity with the need for more advanced type safety and optimization.
Hacker News users generally discussed alternatives to TypeScript enums, with many favoring union types for their flexibility and better JavaScript output. Some users pointed out specific benefits of enums, like compile-time exhaustiveness checks and the ability to iterate over values, but the consensus leaned towards unions for most use cases. One comment mentioned that enums offer better forward compatibility when adding new values, potentially preventing runtime errors. Others highlighted the awkwardness of TypeScript enums in JavaScript, particularly reverse mapping, and emphasized unions' cleaner translation. A few commenters suggested that const assertions with union types effectively capture the desirable aspects of enums. Overall, the discussion frames enums as a feature with niche benefits but ultimately recommends simpler alternatives like union types and const assertions for general usage.
Summary of Comments ( 35 )
https://news.ycombinator.com/item?id=43306421
The Hacker News comments discuss the potential for RPN calculators to replace the TI-84, with many expressing enthusiasm for RPN's efficiency and elegance. Several commenters highlight HP's legacy in this area, lamenting the decline of their RPN calculators. Some suggest that a modern RPN calculator with graphing capabilities, potentially leveraging open-source tools or FPGA technology, could be a compelling alternative. Others point out the steep learning curve of RPN as a barrier to widespread adoption, especially in education. There's also discussion about the TI-84's entrenched position in the education system, questioning whether any new calculator, RPN or otherwise, could realistically displace it. A few commenters propose alternative approaches, such as using Python-based calculators or emphasizing computer-based math tools.
The Hacker News post "Ask HN: Should there be new RPN calculators to replace the TI-84?" generated a moderate amount of discussion, with a number of commenters expressing their opinions on RPN, calculators in general, and the TI-84 specifically.
Several commenters voiced strong support for RPN, praising its efficiency and logical structure. One user argued that RPN is superior for complex calculations due to its inherent lack of parenthesis and the ease with which intermediate results can be manipulated. They went further to suggest that a well-designed RPN calculator could be a powerful tool for education, promoting a deeper understanding of mathematical operations. Another commenter echoed this sentiment, emphasizing the intuitiveness of RPN once mastered.
However, not everyone agreed on the necessity of replacing the TI-84 with an RPN-based alternative. Some commenters questioned the practicality of such a move, citing the TI-84's widespread adoption and familiarity among students and educators. One user pointed out the importance of standardized testing and the potential difficulties of introducing a new calculator type into that environment. They acknowledged the benefits of RPN but questioned whether the transition would be worth the effort. Another commenter suggested that the TI-84's dominance stems from its approved status for standardized tests and its comprehensive functionality, including graphing capabilities, which might not be easily replicated in an RPN calculator.
Some commenters offered alternative suggestions, such as incorporating RPN functionality into existing calculator platforms or utilizing software-based RPN calculators. One user highlighted the existence of RPN emulators for the TI-84, suggesting that this could be a viable solution for those interested in exploring RPN without abandoning the familiar platform. Another commenter advocated for the use of computer algebra systems (CAS) like Maxima or Wolfram Alpha, arguing that these tools offer superior functionality compared to traditional calculators.
A few commenters delved into the historical context of RPN and its association with HP calculators. One user reminisced about the HP-41C and its programmable features, while another discussed the decline of HP calculators in the educational market.
The overall sentiment in the comments section seemed to be a mix of appreciation for RPN and a pragmatic recognition of the challenges involved in replacing the ubiquitous TI-84. While several commenters expressed enthusiasm for an RPN-based alternative, others emphasized the practical considerations of standardization and existing infrastructure.