Google Spent Over Half Its Crawls on Dead URLs, Stalling a Small Site's Indexing

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A small website noticed its new pages were indexing slowly despite passing standard checks. Search Console's crawl stats showed that 52% of Google's roughly six daily requests returned 404 errors. The dead URLs were leftovers from a past compromise, including injected parasite endpoints, WordPress paths on a non-WordPress site, and random page names. The team blocked only those junk patterns in robots.txt rather than using mass redirects, and expects more crawl activity to shift toward real pages.

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Developer builds Duo-Man, a virtual Walkman app for the foldable iPhone Duo

Developer Vidit Bhargava has created Duo-Man, an app for the foldable iPhone Duo using the new BitRig development environment. The app uses hinge state events to mimic the cassette-door behavior of classic Walkman players. Its features include interface control through APIs for the 7.6-inch internal display, and audio feedback built from real field recordings. It also integrates with Apple Music and local files, and supports Apple Pencil to simulate physically spinning a cassette tape reel.

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ProgrammingDEV Community ·

CSS alpha(): serve davvero o è solo zucchero sintattico?

Il testo analizza tre modi per ottenere una variante trasparente di un colore definito in una custom property CSS. Per anni la soluzione più diffusa è stata scomporre il colore in canali, con il limite di vincolare il formato colore e rendere il codice fragile. Le alternative moderne sono color-mix() con transparent, che miscela il colore verso la trasparenza, e i colori relativi, che ricostruiscono il colore in un'altra funzione impostandone l'alpha. La nuova funzione alpha() svolge esattamente il compito di impostare un'opacità, senza scegliere spazi colore né riscrivere i canali, rendendo il codice più leggibile.

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ProgrammingDEV Community ·

AI, Quantum Computing and Biotech Seen as Key Technologies for the Next Decade

Emerging technologies such as artificial intelligence, quantum computing and biotechnology are increasingly moving from research labs into commercial products. AI is evolving from single-task tools toward agentic systems that can plan steps, use tools and revise their own results toward a goal. Quantum computers exploit superposition and entanglement to tackle specific hard problems like molecular simulation, though qubits remain fragile and error-prone. Biotechnology, now heavily data-driven, depends on bioinformatics, which makes it a valuable skill for computer science students. The article also highlights that all three fields demand large computing power, which cloud infrastructure increasingly provides.

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ProgrammingDEV Community ·

RecallForge: an offline, open-source study workspace with source-linked practice

The developer built RecallForge, a free and open-source tool that helps learners repeat cycles of practice, mistake review and revision. The browser-based viewer works without an account, storing study data locally in the browser and functioning offline once opened. It includes sample packs on investment fundamentals, technical analysis, financial risk and Cell Biology, though these are demonstrations rather than official exam material. Learners can study with immediate feedback or sit timed exams, and can build focused retests from wrong or skipped questions. The article also stresses that browser-local data can be lost when browser data is cleared or devices change, which is why portable encrypted or plain JSON backups are provided.

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