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<h1><strong> TLDR Dev <span id="date">2025-11-26</span></strong></h1>
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<strong>Greptile's AI code review beats Cursor, Copilot, and CodeRabbit on bug-catching benchmarks (Sponsor)</strong>
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Not everyone trusts AI to write code. But using it as a 2nd pair of eyes to catch bugs that humans miss? That's a no brainer.<p></p><p><strong>Greptile</strong> is trusted by 1,000 software companies and some of the <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fwww.greptile.com%2Fexamples%3Futm_source=tldr%26utm_medium=sponsorship%26utm_campaign=tldr_dev/1/0100019ac010dea5-e3b31665-933e-4c5d-af5a-e013f7486ce3-000000/y4SoNT0EldVVljO2tG5MSJPId8XtVS9COZZPqtdRaVU=433" rel="noopener noreferrer nofollow" target="_blank"><span>top open source repos</span></a> (NVIDIA, PostHog, Storybook). It <strong>automatically reviews PRs</strong> in GitHub and GitLab with <strong>graph-based codebase context</strong>. It <strong>learns from your feedback</strong> to improve comments over time.</p>
<p>📊 When tested on 50 real world bugs, Greptile led with an 82% catch rate -- 41% higher than Cursor (58%).</p>
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<strong>The Web Animation Performance Tier List (8 minute read)</strong>
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This post contains a tier-based ranking for web animation performance techniques organized around how they interact with the browser's render pipeline. S-Tier animations use compositor-thread properties, like `transform`, `opacity`, and `filter`, that can run smoothly even when the main thread is blocked, while lower tiers have increasingly expensive operations like triggering paint (C-Tier) or layout (D-Tier). Hardware-accelerated animations are generally best, but there are important caveats like browser de-optimizations and GPU memory limitations.
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Spotify's background coding agent uses advanced context engineering to automatically edit code and create pull requests across thousands of repositories. After experimenting with open-source agents and building their own, Spotify's team found success with Claude Code by crafting detailed, tailored prompts that describe end states rather than step-by-step instructions, and by limiting the agent's tools to maintain predictability.
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<strong>Python is not a great language for data science. Part 1: The experience (17 minute read)</strong>
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Python is overused in data science and isn't inherently well-suited for it, excluding deep learning. Students using Python often struggle with tasks that are trivial in R.
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<strong>What They Don't Tell You About Maintaining an Open Source Project (9 minute read)</strong>
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Maintaining an open-source project like Kaneo is more than just building it. It involves extensive documentation, user support, and careful consideration of feature requests. Migrations can be challenging, requiring rigorous testing and clear communication to avoid data loss, but contributors are invaluable.
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Every branch gets a live URL with prod-level services, routes, and real data. Debug with real data, not a mock. Push, preview, merge with confidence. Minimal YAML + one deploy hook, done. Reviewers see exactly what ships. Fewer fire drills.<p></p><p>• <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fwww.youtube.com%2Fwatch%3Fv=OaFfgxVuoFc/1/0100019ac010dea5-e3b31665-933e-4c5d-af5a-e013f7486ce3-000000/wbr_jCqUA1eqbvYi62wkjXIC1wMwG5yvp2BhYzGQr68=433" rel="noopener noreferrer nofollow" target="_blank"><span>See the prod-clone demo</span></a></p>
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Flowglad is an open-source payments and billing infrastructure that simplifies and improves the developer experience. It has a single integration for various pricing models, removing the need for webhooks and manual data mapping. Flowglad provides a full-stack SDK, including backend and React frontend tools, allowing access to customer billing state using existing user IDs.
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VueFinder is a developer-friendly Vue 3 file manager offering complete file operations and a beautiful, modern interface. It has features like upload, download, rename, delete, archive, search, and preview functionalities. Designed with developers in mind, it supports TypeScript, multiple languages and themes, and has flexible configuration for easy backend integration.
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Requestly is a free, open-source API client and HTTP interceptor that has local API testing, mocking, and modification capabilities.
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<div style="text-align: center;"><span style="font-size: 36px;">🎁</span></div></div>
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<div style="text-align: center;"><strong><h1>Miscellaneous</h1></strong></div>
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fspectrum.ieee.org%2Fit-management-software-failures%3Futm_source=tldrwebdev/1/0100019ac010dea5-e3b31665-933e-4c5d-af5a-e013f7486ce3-000000/u8ofT4uyyKmp2c0zHHLiC0s2noWEuke0nBDkFlNR7mU=433">
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<strong>Software Failures and IT Management's Repeated Mistakes (21 minute read)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Despite a massive increase in global IT spending, software project success rates haven't improved significantly, leading to growing business and societal costs due to pervasive failures. These failures come from recurring issues like human error, unrealistic goals, and inadequate risk management, often repeating past mistakes. Case studies like the Phoenix payroll system and the UK Post Office's Horizon system show the consequences of these failures, which include financial losses, ruined lives, and a persistent lack of accountability.
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<span>
<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fwww.promptarmor.com%2Fresources%2Fgoogle-antigravity-exfiltrates-data%3Futm_source=tldrwebdev/1/0100019ac010dea5-e3b31665-933e-4c5d-af5a-e013f7486ce3-000000/BV-ZqVxWbDEaUXNQFzUi5uJmhuXX1X0qzgu5OUz50Ss=433">
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<strong>Google Antigravity Exfiltrates Data (8 minute read)</strong>
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</a>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
An indirect prompt injection can lead to data exfiltration in Google's new agentic code editor, Antigravity. Attackers can manipulate Gemini (Antigravity's AI) to collect sensitive credentials and code snippets from the user's workspace by poisoning a seemingly harmless file. Gemini then bypasses file access protections and uses a browser subagent to transmit this data to an attacker-controlled site via a crafted URL.
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fbdtechtalks.com%2F2025%2F11%2F24%2Fwhat-is-next-for-yann-lecun-after-his-departure-from-meta%3Futm_source=tldrwebdev/1/0100019ac010dea5-e3b31665-933e-4c5d-af5a-e013f7486ce3-000000/ubKeZTyi02brnttTIL7I959DUVwSiqvOr0aNcUErcE8=433">
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<strong>What is next for Yann LeCun after his departure from Meta? (6 minute read)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Yann LeCun, a Turing Award winner and pioneer of modern AI, will leave his role as Meta's chief AI scientist by the end of the year to start a new AI startup. LeCun has been vocal about the limitations of LLMs and believes the AI community is headed in the wrong direction. He doesn't believe that scaling LLMs will result in human-level AI. His new startup will focus on developing AI systems that understand the physical world through self-supervised learning and world models.
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<h1><strong>Quick Links</strong></h1>
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fopen.substack.com%2Fpub%2Fpragmaticengineer%2Fp%2Fcopy-holiday-gift-ideas-for-techies-2025%3Futm_source=tldrwebdev/1/0100019ac010dea5-e3b31665-933e-4c5d-af5a-e013f7486ce3-000000/GWysFocgUOBwX7KSUfAHJKkeW2b1CkMzeZ1TALsfrek=433">
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<strong>Holiday gift ideas for techies (8 minute read)</strong>
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Some fun tech worker-specific holiday gift ideas include temperature-controlled mugs, CO2 monitors, mechanical keyboards, noise-cancelling headphones, massage vouchers, and fitness trackers.
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<strong>Onyx (GitHub Repo)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Onyx is an open-source, self-hostable AI chat platform with advanced features like custom agents, web search, RAG, and connectors to various knowledge sources.
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fbrooker.co.za%2Fblog%2F2025%2F11%2F20%2Fwhat-now%3Futm_source=tldrwebdev/1/0100019ac010dea5-e3b31665-933e-4c5d-af5a-e013f7486ce3-000000/FBnajhkgofzyBm6XUUBH2Q8qOpg7nko0l0CyRadT_aM=433">
<span>
<strong>What Now? Handling Errors in Large Systems (6 minute read)</strong>
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</a>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Error handling in large systems is complex, as the appropriate response to an error depends on factors like failure correlation, whether the error can be handled at a higher layer, and the possibility of meaningful continuation.
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<span>
<strong>Headlamp (GitHub Repo)</strong>
</span>
</a>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Headlamp is an easy-to-use and extensible Kubernetes web UI with multi-cluster support, plugin extensibility, and interactive read-write capabilities.
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