Dirk Eddelbuettel: RcppArmadillo 0.4.100.0
A new minor upstream release 4.100 of the Armadillo templated C++
library for linear algebra was finalised by Conrad yesterday.
I rolled up the corresponding RcppArmadillo
release 0.4.100.0 which is now on CRAN and will go to
Debian shortly.
Changes in RcppArmadillo version 0.4.100.0 (2014-02-28)Courtesy of CRANberries, there is also a diffstat report for the most recent release As always, more detailed information is on the RcppArmadillo page. Questions, comments etc should go to the rcpp-devel mailing list off the R-Forge page.
- Upgraded to Armadillo release Version 4.100.0 (Dirt Cruiser)
- added
normalise()for normalising vectors to unit p-norm- extended the
fieldclass to handle 3D layout- extended
eigs_sym()andeigs_gen()to obtain eigenvalues of various forms (eg. largest or smallest magnitude)- automatic SIMD vectorisation of elementary expressions (eg. matrix addition) when using Clang 3.4+ with -O3 optimisation
- faster handling of sparse submatrix views
- workaround for a bug in LAPACK 3.4
This post by Dirk Eddelbuettel originated on his Thinking inside the box blog. Please report excessive re-aggregation in third-party for-profit settings.
So it may sound normal to receive compressed response for CSS/JS file
from Apache2 but what I faced is completely different behavior, here I
saw not just body of response but also header are getting compressed
and send to browser and browser was unable to interpret the response
there by leading page rendered without CSS and JS.
That was long story short, so let me explain in detail the case and
what I found out.
I have 
So you can see no response header in the above image but there is a
response and below how is response content visible on firebug.
Still weird part was when using wget/curl directly to get the CSS I
was getting correct reply and the file, which is puzzling.
So I went ahead opened the CSS url directly using browser and saved
the resulting file. When I used file command on it, output
suggested the saved file in gzip compressed!. I went ahead
uncompressed it and opened the file and inside it I found response
header and the response body! So what just happened? Did apache some
how manage to compress entire respone not just response body?
The more puzzling question was why did it work when I was using
mod_proxy_uwsgi and failed when I switched to mod_uwsgi. I had no
clue at this point why this behavior is coming up.
So response is still gziped but this time only response body was
gziped and Content-Encoding field was set properly which makes browser
to properly uncompress the response body and use it.
So it seems like there is a difference between mod_uwsgi and
mod_proxy_uwsgi implementation. mod_uwsgi was sending the response
along with response headers which was compressed by mod_deflate there
by rendering browser helpless to interpret the response. But
mod_proxy_uwsgi seems to be only sending the response content without
response body and this content was later compressed by mod_deflate and
proper response headers were set by apache before sending it to
browser.
So now whose fault is this? Is it the bug in mod_uwsgi or, mod_deflate
not being able to exclude response headers from compression? I've no
clue! If you have a clue and you want to share it with me, please
consider writing to me over email. My details are available in
Moving from Lilo to GRUB, using LVM as default, etc throughout the last years it was time to evaluate how well LVM works without a separate boot partition, possibly also on top of Software RAID. Big disks are asking for partitioning with GPT, just UEFI isn t my default yet, so I m still defaulting to Legacy BIOS for Debian/wheezy (I expect this to change for Debian/jessie and according hardware approaching at my customers).
So what we have and want in this demonstration setup:
The next step on this front will be the addition of path-based
searches, using the excellent Postgres 
There are times when I consider launching my own company again, most often when it is late at night and the inpetitude of so many other companies gets me too worked up. Then I sit back and think about details and write it off.
I've worked for myself in the past a couple of times, and each time it was both more fun and more difficult than expected. Getting a couple of clients is usually easy, getting a ten more is common, but getting "many" is hard and getting "lots" is something I've never done - lots of users for free sites though, along with the associated support burdon!
So the though dies away once I sit down and work out the net profit I'd need to live. My expenses are low, so let us pretend I can easily live on 1000 a month. So the "company" has to make more than that, to cover costs, but perhaps not much.
Pretend you were offering DNS hosting you'd probably be able to implement that easily on, say 10, virtual machines, net of 150 a month. Imagine clients pay 5 for an unlimited number of domains that means you need to have 1000+150/5 = 230 clients. Not impossible, but also not easy.
Pretend instead you're offering backup space, and the numbers get bigger because disk is expensive. Again getting some users would be easy, but getting lots would be hard because your competition is dropbox, skydrive, etc, etc.
Once you start thinking of "ideas" they come easily, but the hard part is being realistic about what people would pay for. As always the idea is the easy part, the execution is the hardest part. Realistically if I were to be desperate to work for myself at short notic I'd do the obvious thing - I'd buy a pair of ladders, a bucket, and clean windows. Low overheads, reasonable demand, and I'd be both "fit" and "outdoors".
When it comes to paying for online services off the top of my head I personally pay for maybe two things, both of them niche (although profitable for their providers I'm sure), and I know many people who live on the internet but pay for nothing.
I love learning about programming languages.
But this one really took me by surprise.
Yes, apparently there is a 
As a sidenote, despite the use of 
Only the end closing the connection first will reach the
It should be noted that when a connection is reused, the TWRecycled
counter is increased (despite its name).
Piston, an Openstack-in-a-box vendor[1] are a sponsor of the Red Hat[2] Summit this year. Last week they 
Wanna-build, wanna-build, which packages spent most time on armel buildd's since beginning of 2013? 
Wowsers, today was a pretty full, but laid back day.
Zoe has this small wrist-sized ring with a bunch of different coloured long
ribbons on it that she got from a birthday party a while ago. She plays with it
every now and then, and uses it to torment Smudge. This morning she was dancing
around with it, and it made me think of rhythmic gymnastics, so using my trusty
