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Implementing form filling and accessibility in the Firefox PDF viewer
We decided it was time to reinvest in the PDF viewer (PDF.js) and support filling PDF forms within Firefox to make our users' lives easier.
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 7,294 posts.
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The future of Python build systems and Gentoo
Anyone following my Twitter could have seen me complaining about things happening around Python build systems frequently. The late changes feel like people around the Python packaging ecosystem hav…
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PEP 0484 – Type Hints is accepted
PEP 3107 introduced syntax for function annotations, but the semantics were deliberately left undefined. There has now been enough 3rd party usage for static type analysis that the community would benefit from a standard vocabulary and baseline tools w...
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Citations on the Anthropic API
Claude can now cite specific passages from your documents, delivering verifiable responses with built-in source tracking. Update: Now available in Amazon Bedrock. (June 30, 2025) Today, we're launching Citations, a new API feature that lets Claude ground its answers in source documents.
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π0.5: A VLA with open-world generalization
Our latest generalist policy, π0.5, extends π0 and enables open-world generalization. Our new model can control a mobile manipulator to clean up an entirely new kitchen or bedroom.
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Play on Heroku
Developers with experience in both Java and Ruby web development often ask the question: Why is web app development so complicated in Java, and so much...
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How Julia ODE Solve Compile Time Was Reduced from 30 Seconds to 0.1
Open Source Software for Scientific Machine Learning
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Profiling Python in Production
This post is about the ways we approached instrumentation, and some tools you can use to optimize your own apps (including code). Learn how we reduced CPU usage by 80% through Python profiling.
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OpenCV-Python Cheat Sheet: From Importing Images to Face Detection
What is OpenCV-Python? OpenCV is an open source computer vision and machine learning library. It has 2500+ optimized algorithms—a comprehensive set of both classic and state-of-the-art computer vision and machine learning algorithms. It has many interfaces, including Python, Java, C++,… Continue reading OpenCV-Python…
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Uber migrates microservices to multi-cloud platform running Kubernetes and Mesos
Each and every week, Uber’s 4,500 stateless microservices are deployed more than 100,000 times by 4,000 engineers and many autonomous systems. These services are developed, deployed, and operated by hundreds of individual teams working independently across the globe. The services vary in size, shape, and…
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Using ChatGPT to make Bash palatable
Brev.Dev Instances Console
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Nine years of Go
Happy 9th birthday, Go!
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Why IntelliJ IDEA is hailed as the most friendly Java IDE (many screenshots)
Every time I visit a Java conference or a meetup and talk to people unfamiliar with IntelliJ IDEA, I get similar questions again and again: “What’s so special about IntelliJ IDEA? What does IntelliJ I
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Open Sourcing Our Go Libraries (2014)
Dash knows your context, your team, and your work, so your team can stay organized, easily find and share knowledge, and keep projects secure, all from one place.
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Introduction to x64 Assembly
Access technologies that use data for modern code, machine learning, big data, analytics, networking, storage, servers, cloud, and more.
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Your developers aren’t slow
“Why didn’t we ship last week?” As managers, it’s easy for us to blame our team for missing deadlines. But are slow developers really the reason you’re not shipping on time? At Sprintly, we have a lot of data on developer cycle time. We track how long it takes them to complete different types of …
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Efficient GraphQL Queries in Ruby on Rails and Postgres
We discuss what N+1 queries are, how they are easily produced in GraphQL, and how to solve them using the graphql-batch gem along with a few custom batch loaders.
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Everything You Need to Know About the CSS will-change Property
The latest news about Opera web browsers, tech trends, internet tips.
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Building a fair multi-tenant queuing system
Building the Inngest queue - Part I
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A Technical Perspective on the Apple iPhone Case
The legal dispute between Apple and the FBI might prove pivotal in the long-running battle to protect users' privacy and right to use uncompromised encryption. The case has captured the public imagination. Of course, EFF supports Apple's efforts to protect its users. The case is complicated...
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Bevy 0.9: data oriented game engine built in Rust
Thanks to 159 contributors, 430 pull requests, community reviewers, and our generous sponsors, I'm happy to announce the Bevy 0.9 release on crates.io…