I have uploaded new pictures to Google+ and/or Flickr. Here they are - unsorted and uncommented. This is the black and white edition.
I have uploaded new pictures to Google+ and/or Flickr. Here they are - unsorted and uncommented.
SQLite4: The Design Of SQLite4. That sounds very interesting. Especially the first paragraph in "2.0 Overview", where he briefly emphasizes that SQLite3 will continue to be supported and both versions will remain available in parallel. And of course, the various changes that SQLite4 will have compared to the other version, such as the significantly better encapsulation of the engine in its own object. This makes it quite possible to have multiple databases open at the same time without much juggling. And what particularly pleases me: all calculations in Decimal Math and no longer double or float. Sorry, but double (and especially not float) has anything to do in a database, except perhaps as a data type for rare special cases. Also some other nice things in it, for example covering indexes and of course the standard available foreign key constraints.
Jarvis. Someone is working on something like Light Table for Python (Light Table has also promised Python support, but so far there's only a preview for Clojure). Looks quite interesting and finally brings some fresh air into interactive environments for programming languages.
Remote Debugging - Real Software Documentation. Other systems should take a few slices from this. In my game project, I had a problem with the latest version under Linux. However, my development environment is OSX, where everything runs smoothly. So what to do? Well, a good opportunity to take a look at the remote debugger. And it's really trivial. Boot up a Linux system (I use Vagrant on my OSX machine), copy over the remote debugger stub, run it, configure it minimally, and get started. Directly from the OSX IDE, transfer the compiled code to the remote environment and start it, directly with breakpoints and variable watch and such things. Basically, all that I would also have locally with OSX. In principle, there is almost no difference, except that the program runs on Linux. Why is it so much more complicated in so many other environments? I guess I'm getting old, I just don't have the patience for cumbersome environments anymore.
..Nowhere.. has a series of free classes and plugins for RealBasic, including one for a syntax highlighting editor and list boxes with arbitrary cell content.
The Opa blog: Announcing Opa 1.0. Opa no longer generates native code for its own backend, but generates JavaScript for Node.js integration. Sounds quite interesting, as Node.js integration could eventually allow access to the libraries available there (though you would then naturally lose the guaranteed properties of Opa). And additionally, the chances are now higher that you will find a suitable host or that self-hosting could become more pleasant.
Make runfcgi fail when database connection is open before fork. This is something I've been chasing for ages, most recently in a few pretty important projects. Flup works by first initializing the WSGI application and then making the forks for the workers with this initialized WSGI application. Unfortunately, we have database accesses during application initialization - as a result, the base process already has an open database connection, and each fork copies these data. But the socket of the connection doesn't go with it - the new process just thinks it's connected, but it's not. Accesses from the new processes then fail with an exception. In the linked patch, you can also replace the raise on the exception with connection.connection = None. This simply discards the connection that is already defective and always builds a new connection in new processes. With this, we have at least been able to fix this in a production environment (with psycopg2) and are optimistic that it will also help in the environment with pyodbc.
LiveScript. Looks interesting, a descendant of CoffeeScript, but with a syntax that is strongly inspired by Haskell and a Prelude that also aligns with Haskell. With it, you can work in a functional language instead of JavaScript, which, however, continues to try to maintain a balance between functional and imperative elements - so not the pure approach as in Haskell.
ronnix/fabtools. Looks interesting - a few tools for Fabric with which you can manage simple system packages and Python packages (also within virtual environments). Should take a look, could simplify a few things when initializing work environments. However, Vagrant currently only uses Chef and Puppet and not Fabric, if I remember correctly.
SET TRANSACTION ISOLATION LEVEL Transact-SQL. There you can find more information about the isolation level in MSSQL, especially what the snapshot feature means. In principle, this makes MSSQL behave similarly to PostgreSQL.
#18251 multithreading deadlock in django.models.loading.get_apps – Django. And another thing that might affect us - race conditions between Django threads during the initialization of Django applications. There's already a patch for this that fixes it in the Django internals.
Enabling Snapshot Isolation - SQLAlchemy 0.7 Documentation. Could this help us? MSSQL seems to have a rather unfavorable isolation level as default. Hmm, we'll probably try it out.
"Prince Flo, King Django & The Deadlock Doctor" by Bluekilla – laut.de – Song. Okay, yes, I was looking for ideas about problems with deadlocks and Django, and well, the title of this song sounds like it could become the theme song for my problem, but unfortunately, the Deadlock Doctor doesn't have any useful ideas either.
Using SELECT FOR UPDATE in Django. That's what it's all about. Because the Django ORM cannot currently generate a SELECT FOR UPDATE, but sometimes you just need it.
WordPress › WordPress 3.4 “Green”. Amazing - release update, two theme updates (one - twentyten - I use as a parent theme for my own RFC1437 theme) and a plugin update later and my blog still works. Well, and still dissatisfied: a bug in the Atom posting for Media has been open for ages and not fixed. And 3.4 changes the Atom posting infrastructure, but doesn't fix the bug again. And the old patch doesn't work anymore because the file structure has changed. And that's exactly where the deficit of the WordPress Dev team always shows up: to respond to bug reports and close the damn things. Let tickets with patches rot for 11 months until the file structure changes so that the patches no longer work? Ridiculous. And for me that means that my posting workflow for images into the blog is broken for now, because the XMLRPC upload cannot set metadata such as title and the Atom upload only uploads the image file, but does not create the different image sizes needed for posting.
Thomas Tempelmann | Arbed - The Advanced RB Editor. You stumble upon all sorts of things - I still know Thomas from Modula-2 times, he was like the Modula-2 compiler guru back then. And now he uses Real Basic. And he has built a quite interesting tool for working with RBP files, which I should take a look at because it could simplify a few things (especially versioning, the possibilities that RB offers out of the box are not very impressive). And yes, I really do use Basic. No joke.
ucsd-psystem-vm 0.11. I just had a flashback - UCSD-p System is alive! The link is a VM for UCSD Pascal that runs under Linux. And there is also the original UCSD-p System for download. There is even a version (IV) for DOS, which is probably the easiest to run.
TryAPL. Also online. Also, an APL in JavaScript. With a popup keyboard with the funny APL characters on it. Fun.
PEG.js – Parser Generator for JavaScript. I stumbled upon it while looking for some parser implementations, including PEG-based parser generators, as I have a PEG definition for Markdown. But I probably need to study some theory before I can use it meaningfully. Or I'll just handcraft the parser - the Markdown syntax isn't really that complicated after all. And for my game project, I need to extend the parser with various custom features anyway.
REALbasic | Open Source | Charcoal Design. Open Source for Real Basic. Yeah, I'm currently programming things for myself in Basic. And honestly: it's fun. I found this site while searching for JSON implementations for Real Basic.
Xcode 4.3 MacRuby compatible problem workaround - 東 . Blog. Annoying, but necessary - the AppStore migration of XCode has broken the template installation of MacRuby, so that even with the new MacRuby (0.11 with support for XCode 4.2 and 4.3 is out) the templates do not work right away and the integration with Interfacebuilder does not work. With the instructions here it works again.
Waterbear: Welcome. Falls into a similar category as Google Blockly, but it is more of a toolkit on which one can build visual languages. So maybe interesting for one or the other. Definitely interesting to play around with.
google-blockly - A visual programming language - Google Project Hosting. Generally, I consider visual programming languages to be dead-ends and rather useless, albeit entertaining toys, in most cases. I would also place Blockly in this category, especially since it is really just a visual representation of classic programming structures - such as IFs, variables, and the like. Actually disappointing, considering that Prograph already visualized data flow programming decades ago (and thus provided a much more interesting model for a visual programming environment).
On the day of our return journey, we stopped in Emmerich am Rhein and in Rees and took a small tour on the Rhine in Rees. A nice end to the weekend.
And on to the third day - the open-air museum in Arnhem. It is right next to the zoo and just as beautiful in a forest and meadow landscape, inside a tram runs and there are always small show performances. Really very nicely done.
And here is the second day - pictures from Burgers Zoo, our main destination. As you can see, it all starts and ends with penguins. Perfect beginning and end.
Here's the beginning of the Pentecost weekend - impressions from the city center and the Rhine bank of Arnhem.