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HDF Group's Hierarchical Data Format (HDF5) Library
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blog.raymond.burkholder.net
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18 years ago
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kor
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When I give talks on agile, people often ask the inevitable question: “When is Agile not appropriate?” My response is that I don’t really care what people call what they do. What I am concerned about is the quality and frequency of the feedback that informs the control and decisions regarding project management and technical decisions on my project. I find the idea that you might not want to improve your feedback to be very odd.
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Too much data for the browser window? Solution: iframe
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www.databasesandlife.com
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18 years ago
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eng
Recently I was asked to put a webpage online which contained some navigation and some content. There was more content than could fit the browser on an average screen. So the content looked basically like this: But then I was sent a new version which was cleverer, The content was stored in an iframe There was Javascript which dynamically altered the size of the iframe to be the size of the monitor resolution (i.e. independent..
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At lunchtime today I was told via IRC/e-mail that Chris Orme, of Datahop passed away after a flight back from a peering conference in Florida. I’ve worked with Chris in the past, and despite having some differences of opinion, found him to be a great guy to work with. We had a disagreement about some contractual matters, and Chris was man enough to apologise to me in person at the LONAP 10th Birthday event. I was happy that we’d resolved ..
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At lunchtime today I was told via IRC/e-mail that Chris Orme, of Datahop passed away after a flight back from a peering conference in Florida. I’ve worked with Chris in the past, and despite having some differences of opinion, found him to be a great guy to work with. We had a disagreement about some contractual matters, and Chris was man enough to apologise to me in person at the LONAP 10th Birthday event. I was happy that we’d resolved ..
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This post is a Norwegian language summary of a talk I did April 14th, 2008 Jobber du smidig? Jeg jobber ikke smidig. Men jeg jobber smidigere enn jeg gjorde for tre måneder siden og enda mer smidig enn jeg jobbet for et år siden. Og om et år kommer jeg til å jobbe enda smidigere. Men Smidige metoder handler ikke om et mål, de handler om konstant forbedring gjennom bedre og hyppigere feedback.
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You can't work out what the type of data is by looking at the data itself
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www.databasesandlife.com
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18 years ago
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eng
I was reading this article about how certain data gets messed up when one imports it into Excel (certain data looks like a date and thus gets converted into one), and it reminded me of a problem I had when transferring data over an XML protocol from Perl (the SOAP library was inspecting the hex data I was transferring, but a small percentage of hex numbers look like “123e123”, which looked like a floating point number to the library)
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There was a question in Oracle-L mailinglist recently, regarding excessive SQL*Net break/reset to client waiting by a session. A quote is below: We are seeing an insert statement reporting SQL*Net break/reset to client as over 33% of its time. On the face of it this event suggests network issues but nothing else backs this up as the cause. So I looked at the Java code in question and a trace of one of the sessions. What is hap....
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There was a question in Oracle-L mailinglist recently, regarding excessive SQL*Net break/reset to client waiting by a session. A quote is below: We are seeing an insert statement reporting SQL*Net break/reset to client as over 33% of its time. On the face of it this event suggests network issues but nothing else backs this up as the cause. So I looked at the Java code in question and a trace of one of the sessions. What is hap....
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Programming Languages: Is newer always better? (Part 2)
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www.databasesandlife.com
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18 years ago
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eng
Let me respond to some of the comments left at Programming Languages: Is newer always better? Knowing what’s going on: This is a terrible example. You are really arguing that PHP programmers don’t know how their language works while C programmers do. This is a horribly wrong-headed assertion. How about I counter your straw man with one of my own. I know plenty of new (as of the last 5 years) C programmers who have no idea that 0 is eq..
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I constantly hear the belief that modern programming languages and environment are better than older programming languages. More productive, easier to user, and so on. It would stand to reason: nobody would make a new programming language with worse features than an already existing programming language. Or would they? Everyone seems to think that this is fact. But surprisingly it’s not. There are many features in older programming langua..
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In my previous articles, I have showed you how to create a simple blog application with articles, comments, rss feeds and formatting. However, as it is currently written, the application allows for anyone to create or edit an article. This is a serious security issue, and we better fix it. In this tutorial, I will show you how to make sure that only logged in users can create articles, and that nobody else can edit an article that you creat..
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For some time now, many of us around MIT have noticed just how awesome sshfs is. It gives a totally lightweight way to access the remote filesystem of any machine you have ssh to, without requiring any extra setup on the host. I’ve been running for at least a year now with my /data RAID on my server sshfs-mounted on my laptop, and it works totally great. Recently, I came across two awesome things that make sshfs even neater.
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For some time now, many of us around MIT have noticed just how awesome sshfs is. It gives a totally lightweight way to access the remote filesystem of any machine you have ssh to, without requiring any extra setup on the host. I’ve been running for at least a year now with my /data RAID on my server sshfs-mounted on my laptop, and it works totally great. Recently, I came across two awesome things that make sshfs even neater.
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Recently I ran the St. Pat's 10 Miler in Atlantic City, Nj. It was my first official running event ever and I enjoyed it lot. Shortly after the race the official results have been posted on the Internet. The data did not only include the number and times of the participants but also gender and age. Looking at the finisher time distribution it shows that most runners finished at around 90 minutes:
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I have always found this an extremely interesting computer science problem, and have written various polygon scanline conversion routines in my life. In January 2002 while at my parents waiting for the work year to start again, I decided to write a new one, this time in Java. (The source code is available on request to anyone who’s interested.) These days, no doubt, many polygon fill routines are available open source, and the descripti..
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On my project, we use Maven to build our software and FitNesse to write functional specifications. However, it was obvious that FitNesse wasn’t designed by Maven-fans. When I use Maven, I already have control over my classpath, and specifying it in every FitNesse test gets to be old really fast. Why can’t I just inherit the project class path, and start FitNesse using maven-antrun-plugin or just from my IDE? I found a neat way to implement ..
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Looking around my hard disk, I found a program I wrote in December 1997 to demonstrate the capabilities of IFS (Iterated Function Series) using Affine maps. Description A shape, an IFS fractal (Iterated Function Series), is defined by a number of transforms. Each one of these transforms map from the whole shape to a smaller self-similar part of it. In an affine IFS fractal, each one of these transforms is affin..
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Imperial College are currently implementing changes so that you need to access either POP3 or IMAP with SSL enabled, I figured since they didn’t list Fetchmail in their new site, then I’d post my configuration (.fetchmailrc) here in case anyone else uses it:
poll icex.imperial.ac.uk
proto pop3
user "USERNAME"
password "PASSWORD"
is "LOCALADDRESS" here
ssl
sslfingerprint "7D:E8:74:1F:E8:B1:E6:15:A6:0C:02:2B:BA:89:BE:4D"
En..
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Imperial College are currently implementing changes so that you need to access either POP3 or IMAP with SSL enabled, I figured since they didn’t list Fetchmail in their new site, then I’d post my configuration (.fetchmailrc) here in case anyone else uses it:
poll icex.imperial.ac.uk
proto pop3
user "USERNAME"
password "PASSWORD"
is "LOCALADDRESS" here
ssl
sslfingerprint "7D:E8:74:1F:E8:B1:E6:15:A6:0C:02:2B:BA:89:BE:4D"
En..
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Anders Nordås wrote a blog post where he talks a little about how he uses his beautiful moleskin notebook. I will pick up his challenge and write about my favorite tool, Post It notes. As many who know me are aware, I always have a pad of Post-It notes and a pen in my left pants pocket. I use the sticky notes for todo-lists, note taking in meetings, planning talks and doing brain dumps.
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A number of great sins have been committed under the guise of making software more maintainable. And 60% of software cost is during maintainance, according to Robert Glass. So what goal could be more laudable to pursue? The only problem is that we call things maintainable which are not. Putting remote interfaces in your application is done to “make it more maintainable”, creating frameworks is done to “make it more maintainable”, using EJBs..
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I’ve recently switched to Conkeror as my primary browser. It started life as a Firefox extension, but nowadays it’s a standalone app built on top of Mozilla’s xulrunner, so it uses the Gecko rendering engine. What it is, is an emacs implemented in Javascript, for the web. This means on the one hand that it acts like emacs. Most of the basic emacs keybindings are supported – you open URLs with C-x C-f, and have buffers you can switch between..
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I’ve recently switched to Conkeror as my primary browser. It started life as a Firefox extension, but nowadays it’s a standalone app built on top of Mozilla’s xulrunner, so it uses the Gecko rendering engine. What it is, is an emacs implemented in Javascript, for the web. This means on the one hand that it acts like emacs. Most of the basic emacs keybindings are supported – you open URLs with C-x C-f, and have buffers you can switch between..
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If you are ultra-Mac, you prefer to use an aesthetic computer that “just works” - as a result, you are usually sexy, artistic and cool. If you are ultra-PC, you prefer to use a clunky un-aesthetic computer that is difficult to use, crashes often, is a virus hell, yet is guaranteed to work with any piece of hardware with a software driver written by a 10-year-old boy in a barn in China - as a result, you are nerdy, cheap and non-cool.
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If you are ultra-Mac, you prefer to use an aesthetic computer that “just works” - as a result, you are usually sexy, artistic and cool. If you are ultra-PC, you prefer to use a clunky un-aesthetic computer that is difficult to use, crashes often, is a virus hell, yet is guaranteed to work with any piece of hardware with a software driver written by a 10-year-old boy in a barn in China - as a result, you are nerdy, cheap and non-cool.
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Grand Master Kim Jeong Seong of the United World Haedong Kumdo Federation visited Helsinki last weekend to hold a seminar on Korean traditional swordmanship . The weekend was a very interesting combination of various sword forms, two sword sparring and cutting and control exercises. We also held examinations for various belt levels, where I attained 1st keub (red-black). Our instructors Jose and Mika reached the 2nd dan ..
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My Pinnacle Mean Streak 2.0 was stolen today from outside my flat (Pigott Street, E14). It’s a black, rigid mountain bike. The wheels are 26", WTB rims, Shimano hubs. The groupset is Deore, and it’s got mechanical disc brakes. I locked it to a lamp post with a steel D-lock whilst I went upstairs, since my bike was greasy, and needed cleaning. It was nicked in the hour between 19:30 and 20:30. The frame number is 1K26102739 . If any..
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My Pinnacle Mean Streak 2.0 was stolen today from outside my flat (Pigott Street, E14). It’s a black, rigid mountain bike. The wheels are 26", WTB rims, Shimano hubs. The groupset is Deore, and it’s got mechanical disc brakes. I locked it to a lamp post with a steel D-lock whilst I went upstairs, since my bike was greasy, and needed cleaning. It was nicked in the hour between 19:30 and 20:30. The frame number is 1K26102739 . If any..
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Two great comments from people about their experiences with Windows. I can really sympathize with these people! From http://blog.seattlepi.nwsource.com/microsoft/archives/132891.asp#102626 Yesterday, it started an update I didn’t even want to initiate on shut-down so I had to walk to my car & drive off with this stupid laptop running in my hand to get to work. Is MS trying to get me fired? From http://blog.seattlepi.nwsource.co..
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Tal Ben-Shahar writes the following in “Happier”, his introductory book into the field of positive psychology: “The proper role of goals is to liberate us, so we can focus on the here and now.” In order to help us have a fulfilling life, our activities should both be meaningful and pleasurable. In this sense, meaning means to have a long term goal, pleasurable means to have a short term goal.
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The code I write in Ruby is higher quality than the code I write in Java. Why? Because the language supports better abstractions. It lets me express a problem once, and reuse it many places. The strength of an environment comes from the quality of the libraries, and the qualities of the libraries comes from the features of the language. In this post, I will review a proposal to make Java a better language: First-Class Methods.
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As I do a lot of programming using open source databases, I couldn’t help but notice that inclusion of XML in the database seems to be a hot topic. Postgres 8.1 (just released) and MySQL 5.1 (not released yet) will allow XML documents to be stored as the value of cells, and allow those documents to be manipulated and inspected. (Oracle has had this feature since 2001) I generally don’t like XML (as Robin put it: most formats are designed ..
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Since I’ve got a few moments, and I’ve decided to actually write down some rants rather than deciding that I can’t be bothered to - I’m going to use some space to single the praises of Django . I’ve been using Django for a couple of years now - since around the autumn of 2005, and as such, feel that I’ve got a pretty good grasp of how the framework works. I haven’t really hacked around that much with the innards of Django (although I..
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Since I’ve got a few moments, and I’ve decided to actually write down some rants rather than deciding that I can’t be bothered to - I’m going to use some space to single the praises of Django . I’ve been using Django for a couple of years now - since around the autumn of 2005, and as such, feel that I’ve got a pretty good grasp of how the framework works. I haven’t really hacked around that much with the innards of Django (although I..
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In the past several months (and year), it seems that Linux is really making its way into the desktop market (up until now, it has ruled the server market). Every time I pick up a magazine at Chapters or read Google news, there is some new Linux device or technology. Here are a few that have caught my eye in the past short while: The rapid development of Compiz (formerly Beryl), which puts shame to all other desktop effects and is extrem..
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In the past several months (and year), it seems that Linux is really making its way into the desktop market (up until now, it has ruled the server market). Every time I pick up a magazine at Chapters or read Google news, there is some new Linux device or technology. Here are a few that have caught my eye in the past short while: The rapid development of Compiz (formerly Beryl), which puts shame to all other desktop effects and is extrem..
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It’s been a year since my project replaced IBM WebSphere Application Server with a Java SE solution embedding Jetty. Looking back on the last year, I only have one regret: That it took us so long to make the switch. The difference takes a bit of perception: Our software no longer eats away our time, killing us with a thousand pinpricks. But WebSphere is just the most blatant example of software that gives you nothing, gets in the way of a l..
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30 23 28-31 * * [ "`date +%m`" != "`date +%m --date=tomorrow`" ] && /Users/rjs/bin/monthEnd.py 2>&1 >/dev/null Pretty handy for running on the last day of the month - and should work on Linux.
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30 23 28-31 * * [ "`date +%m`" != "`date +%m --date=tomorrow`" ] && /Users/rjs/bin/monthEnd.py 2>&1 >/dev/null Pretty handy for running on the last day of the month - and should work on Linux.
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