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Bryan O'Sullivan's blog
Blog Archives
What’s in a number? criterion edition
[Edit: a few hours after I wrote this post, I wrote some code to get rid of the inflation phenomenon it describes, and I'll publish a corresponding update to criterion shortly. See below for details, and the bottom for a…
Posted in haskell
What’s good for C++ is good for … Haskell!?
A few days ago, my Facebook colleague Andrei Alexandrescu posted a note entitled Three Optimization Tips for C++, which reminded me that I had unfinished business with Haskell’s text package. I took his code, applied it to the text package,…
Posted in haskell
A major new release of the Haskell hashable library
I have spent quite some time over the last couple of months improving the Haskell hashable library, and all of my efforts eventually turned into a near-complete rewrite of the library. The 1.2 release of hashable is not backwards compatible,…
Posted in haskell
A fast new SipHash implementation in Haskell
I’ve recently been talking with Johan Tibell about submitting his hashable package to become a part of the Haskell Platform. Once we get that submission accepted, we can fold Johan’s excellent hash-based data structures from his unordered-containers package into the…
Posted in haskell
The case of the mysterious explosion in space
The case of the mysterious explosion in space A few months ago, reports began to filter in of an unhappy problem with the Haskell text package: it was causing huge object files to be generated when a file contained lots…
Posted in haskell
Performance: yes, it’s worth looking at the small stuff
While I was in New York for QCon last week, the temperatures started out quite mild, but soared back to their usual sweltering summertime levels by midweek. I thus found myself confined to my hotel room for a few hours…
Posted in haskell
(re)announcing statprof, a statistical profiler for Python
Back in 2005, Andy Wingo wrote a neat little statistical profiler named statprof that promptly disappeared into obscurity. It has since languished almost unknown, with a handful of people writing semi-private forks that themselves seem to be dead. Statistical profiling…
Posted in open source, python
aeson 0.4: easier, faster, better
After months of work, and a number of great contributions from other developers, I just released version 0.4 of aeson, the de facto standard Haskell JSON library. This is a major release, with a number of improvements. Enjoy! Ease of…
Posted in haskell, open source
The future of MailRank’s open source technologies
(Cross-posted from the MailRank engineering blog.) You may have seen my exciting news about our upcoming move to Facebook. It’s been a total blast working on our product, and of course as we did so we released a number of…
Posted in haskell, open source
A major new release of the Haskell statistics library
I'm pleased to announce a major release of of the Haskell statistics library, version 0.10.0.0. I'd particularly like to thank Alexey Khudyakov for his wonderful work on this release. New features: Student-T, Fisher-Snedecor, F-distribution, and Cauchy-Lorentz distributions are added. Histogram…
Posted in haskell, open source
