HackerNews Digest

POSSE (Publish (on your) Own Site, Syndicate Elsewhere) is a content‑distribution model where the author posts to their own domain first, then copies or links to third‑party silos (e.g., Twitter, Facebook, Mastodon). It reduces reliance on external services, preserves canonical URLs, ensures ownership, improves searchability, and allows reverse‑syndication (backfeed) of responses. Syndicated copies typically include a permashortlink back to the original, aiding discovery, spam mitigation, and SEO ranking. Implementation for developers involves automatic posting of the original and then posting a copy with the original link to each chosen silo; the UI can be invisible or provide a preview. Two workflow patterns exist: (1) client → site → silo (server handles syndication) and (2) client → site and client → silo (manual selection). Popular destinations include Twitter, Facebook, Medium, WordPress.com, and ActivityPub services. Libraries and tools supporting POSSE: PHP php‑helpers (POSSE namespace), Python SiloRider, Feed2Toot, Docker images, and various Micropub/Microsub integrations. Numerous IndieWeb sites (e.g., tantek.com, waterpigs.co.uk, aaronparecki.com) demonstrate POSSE with plugins, custom CMSes, or command‑line tools. Related models are COPE (Create Once, Publish Everywhere), POSE (Publish Once, Syndicate Everywhere), and PESOS/P ESETAS, which invert the ownership order.

The page, titled “Making sure you’re not a bot!,” presents a security loading screen that reads “Please wait a moment while we ensure the security of your connection.” It includes headings for visual content, listing “Image 1” and “Image 2,” but no actual images or descriptive text accompany these placeholders. No additional information or functionality is provided.

Daft Punk’s “Harder, Better, Faster, Stronger” is commonly listed at 123 BPM, but precise measurement shows it is 123.45 BPM. Using a manual beat‑count method (identifying the first and last clear waveform peaks, measuring the interval between them, and applying bpm = 60 × (beats − 1) ÷ duration) yields 123.4499 BPM on a Discovery CD rip (216.276 s for 445 intervals) and 123.4534 BPM on the official YouTube audio (216.282 s). The author’s tempo‑detection software, based on FFT and autocorrelation, reports values between 123 and 124, confirming the non‑integral tempo. Hardware used on the Discovery album—E‑mu SP‑1200, Akai MPC‑3000, and Emagic Logic—supports fractional BPMs to one decimal place (SP‑1200, MPC‑3000) and to four decimal places (Logic), making a 123.45 BPM setting feasible. The close match suggests the tempo may have been an intentional Easter egg, though definitive confirmation from the producers is unavailable.

The article describes a minimal x86‑64 Just‑In‑Time (JIT) compiler written to solve a /r/dailyprogrammer challenge that iterates a recurrence relation u(n+1)=f(u(n)). Instead of interpreting each operation, the program emits native machine code for the sequence of arithmetic instructions and executes it directly. Key points: - Executable memory is allocated with mmap (POSIX) or VirtualAlloc (Windows) as writable pages, then protected with mprotect or VirtualProtect to set PROT_READ|PROT_EXEC after code generation (W^X policy). - An `asmbuf` struct holds a page‑sized buffer; helper functions insert raw instruction bytes (`asmbuf_ins`) and immediate operands (`asmbuf_immediate`). - The generated function follows the System V AMD64 ABI: the input integer arrives in RDI (or RCX on Windows) and the result is returned in RAX. Simple move‑and‑return code (`mov rax,rdi; ret`) is assembled by extracting bytes from NASM output. - For each operator (+, –, *, /) the compiler emits the corresponding instruction bytes (e.g., `add rax,rdi`, `sub rax,rdi`, `imul rax,rdi`, `xor rdx,rdx; idiv rdi`). - After emitting all instructions, the buffer is finalized, cast to a function pointer, and called repeatedly to compute the recurrence. The author notes the implementation’s limits (no branching, stack use, or complex expressions) and expresses interest in extending it to more sophisticated JIT tasks.

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The scraped page is the home of the “FracturedJson” GitHub wiki (repository j‑brooke/FracturedJson). When accessed, the site returns the message “You can’t perform that action at this time,” indicating a permission or rate‑limit block that prevents viewing or editing content. The only visible element beyond the error is a placeholder for an image, described only by its alt text: “Layout Types.” No further text, navigation links, or technical documentation is present in the excerpt. Consequently, the page provides no substantive information about the FracturedJson project, its features, or usage; it only signals restricted access and references a missing visual asset labeled “Layout Types.”

Clicks Communicator is an unlocked multi‑band mobile device supporting global 5G, 4G LTE, 3G, and 2G networks. 5G NR coverage includes n1, n2, n3, n5, n7, n8, n12, n13, n14, n20, n25, n26, n28, n38, n40, n41, n48, n66, n71, n77, n78 and n78 5G NR (4×4 MIMO) on a subset. LTE (4G) FDD bands: B1, B2, B3, B4, B5, B7, B8, B12, B13, B14, B17, B18, B19, B20, B25, B26, B28, B66, B71; TDD bands: B34, B38, B39, B40, B41, B42, B48. 3G WCDMA bands: B1, B2, B4, B5, B6, B8, B9, B19. 2G GSM bands: B2, B3, B5, B8. The device is sold unlocked and intended for worldwide connectivity.

Unix Version 4, released in November 1973, was the first Unix system written in C, enabling portability across hardware platforms. The only known copy was recovered in 2025 from a magnetic tape found at the University of Utah after 52 years and now runs on an emulated PDP‑11/45—the same minicomputer used at Bell Labs. The site provides access to this historic system, with source references to squoze.net and the tape‑recovery story. Users are warned of several quirks: backspace is non‑functional, the “#” key deletes characters, “@” terminates a line, the command chdir must be used instead of cd, and there are no manual pages (introduced in later versions). Sessions are temporary, timing out after ten minutes of inactivity, and all state is cleared on page reload, preserving authentic 1973 behavior.

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IPv6, defined in RFC 1883 (1995), expanded address space from 32‑bit (≈4.3 billion) to 128‑bit (≈3.4 × 10³⁸) addresses, aiming to prevent IPv4 exhaustion. Adoption remains under 50 % globally according to Google, APNIC, and Cloudflare data. Key factors limiting deployment: * IPv6 is not backward‑compatible with IPv4, requiring dual‑stack or migration, raising cost and complexity. * It introduced few functional enhancements beyond address size; many security, QoS, and plug‑and‑play features were later added to IPv4. * Network Address Translation (NAT) extended IPv4 usability, allowing many devices to share a single public address and delaying the need for IPv6. * Vendor support, migration ROI, and legacy infrastructure lacking dual‑stack capability hindered uptake. Despite limited rollout, IPv6 supports growth in mobile, broadband, cloud, IoT, and advanced routing (e.g., Segment Routing). Some operators adopt IPv6 when IPv4 address costs rise. Emerging technologies such as QUIC and name‑based DNS/ security models reduce reliance on permanent IP addresses, further altering IPv6’s perceived necessity. Organizations like Huawei and Starlink have secured massive IPv6 blocks, contributing to gradual increases in adoption rates.