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Why OCaml GADTs matter for performance
When GADTs (Generalized Algebraic Data Types) landed in OCaml, I wasn’t particularly happy about it. I assumed that it was the kind of nonsense you get when ...
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Scaling Out PostgreSQL for CloudFlare Analytics Using CitusDB (YC S11)
When I joined CloudFlare about 18 months ago, we had just started to build out our new Data Platform. At that point, the log processing and analytics pipeline built in the early days of the company had reached its limits.
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Chemical flavorings found in e-cigarettes linked to lung disease
A Harvard study links chemicals used in flavored electronic cigarettes to cases of severe respiratory disease.
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Women preferred 2:1 over men for STEM faculty positions
A new study by Cornell psychologists suggests that science and engineering faculty preferred women two-to-one over identically qualified male candidates for assistant professor positions.
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Why it takes so long to get data back from New Horizons
As I write this post, New Horizons is nearing the end of a weeklong optical navigation campaign. The last optical navigation images in the weeklong series…
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An Open Letter to Apache Foundation and Apache OpenOffice Team
A couple of weeks ago I visited my mother back home in Norway. She had gotten a new laptop some time ago that my brother-in-law had set up for her. As usual when I come for a visit I was asked to look at some technical issues my mother was experiencing with her computer. Anyway,...
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European Court Strikes Down Law Allowing Users to Rip Their Own CDs
Today the High Court of the United Kingdom handed down an excellent decision—excellent because the result is so unreasonable, so out of touch with reality, and so divorced from the needs and expectations of ordinary users, that it provides a textbook illustration of the need for urgent reform of...
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Obama Administration Supports Privacy-Invasive “Cybersecurity” Bill
Right before Congress left for its annual summer vacation the Obama Administration endorsed the Senate Intelligence Committee's Cybersecurity Information Sharing Act (CISA). EFF opposes the bill because its vague definitions, broad legal immunity, and new spying powers allow for a tremendous amount...
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U of California policy extends free access to all articles by UC employees
Today the University of California expands the reach of its research publications by issuing a Presidential Open Access Policy, allowing future scholarly articles authored by all UC employees to be freely shared with readers worldwide. Building on UC’s previously-adopted Academic Senate open access (OA) policies, this…
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Understanding ETF “Flash Crashes”
Join your peers in reading the latest perspectives and insights from FactSet experts across topics that matter to you.
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Fedora 22 released
We are proud to announce the official release of Fedora 22, the community-driven and community-built operating system now available in Cloud, Server, and Workstation editions. If that’s all you need to hear, jump over to Get Fedora to download — or for current users, run the upgrade tool. In addition to the latest…
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Ggplot2 version 2.0.0 released by Hadley Wickham
ggplot2 2.0.0: official extension mechanism, new geoms (geom_count, geom_curve, geom_label), appearance tweaks, and facet labels.
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Carina – High-Performance, Instant-On Docker Containers
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Implementing functional languages: a tutorial (1992)
This book gives a practical approach to understanding implementations of non-strict functional languages using lazy graph reduction. The book is intended to be a source of practical labwork material, to help make functional-language implementations `come alive’, by helping the reader to develop, modify and experiment…
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Windows 10: The Next Chapter [video]
Everything you need to know about Windows 10.
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Denying Problems When We Don’t Like the Solutions
There may be a scientific answer for why conservatives and liberals disagree so vehemently over the existence of issues like climate change and specific types of crime.A new study from Duke University finds that people will evaluate scientific evidence based on whether they view its policy implications as politically…
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Introducing JetBrains Toolbox
Final Update (September 18th): The licensing model had been updated. Read the update from our CEO Maxim Shafirov. Update 2 (September 8th): The licensing model announced previously including conditio
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The Federal HTTPS-Only Standard: Necessary and Overdue
The White House Office of Management and Budget has published a new standard recommending full HTTPS on all federal web sites and web services. They are accepting public comments until April 14; if you care about privacy and security, you should weigh in.This post is our public comment: we whole-...
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Poor man's VPN via ssh socks proxy
Redpill Linpro Tech Blog
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Improving compression with a preset DEFLATE dictionary
A few years ago Google made a proposal for a new HTTP compression method, called SDCH (SanDwiCH). The idea behind the method is to create a dictionary of long strings that appear throughout many pages of the same domain (or popular search results).
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VP9 encoding/decoding performance vs. HEVC/H.264
A while ago, I posted about ffvp9, FFmpeg's native decoder for the VP9 video codec, which significantly outperforms Google's decoder (part of libvpx). We also talked about encoding performance (quality, mainly), and showed VP9 significantly outperformed H.264, although it was much slower. The elephant-in-the-room…