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Posts from the ‘Code’ Category

8
Apr

New releases of WorldEngine, OpenMW and TESAnnwyn

Rivers

WorldEngine 0.19 has been released! In case you’re wondering, WorldEngine is the combination of two projects: Lands and WorldSynth. The biggest gain in the merge is that we’re now two developers on the same wavelength and we’ve added plate tectonic simulations! As things have become more serious and complicated, we’ve had to write tests suites to cover our bases. We’re currently about 86% code coverage and the tests guarantee reproducibility which aids us in finding regressions. We’ve got many contributions, so having these in place are crucial for project stability.

What’s new in WorldEngine 0.19:

  • Speed of generation increased by almost a factor of 3 (due to update to Platec and making heavy use of numpy).
  • World-generation is now deterministic, i.e. generation is 100% reproducible.
  • Added support for exporting heightmaps using libgdal (see http://www.gdal.org/formats_list.html for possible formats).
  • Added the ability to modify temperature and humidity ranges as well as the temperature/precipitation curve.
  • Added the ability to generate scatter plots showing temperature and humidity of all terrestrial cells.
  • Added small variations to the temperature-map based on basic orbital parameters.
  • Added a satellite-like view of the world.
  • Added support to save/load worlds in/from HDF5-format.

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6
Nov

Deadlines and Timeouts for Realtime MongoDB Access with TxMongo

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Murphey had an adage: “Anything that can go wrong, will go wrong.” The best we can do is attempt to anticipate any problems that might come up and keep ‘the machine’ running. From an end-user perspective that means being responsive, even with errors. If there is a network error, we want to know as soon as possible with the guarantee that state of ‘the machine’ was not effected by the error.

With the release of TxMongo 15.3.1 we’ve introduced a few things that are useful when creating real-time applications.

We now have per-call deadline and timeouts!

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7
May

Cross-compiling for Raspberry Pi on Ubuntu

RaspberryPi Logo

While the Raspberry Pi 2 has four cores to churn through code, it still takes longer to compile than on most workstations and laptops. If you are feeling adventurous, you can try cross-compiling which has become easier to set up and get working.

Cross-compiling is when binaries created are for another target architecture than the one you are compiling on. This kind of set up is very typical when creating Android applications. The end result is that you can take the resulting binary and place on its target platform, and it will run there.

There are even tricks to getting the cross-compiled binary to also run on your native system!

In this guide, I’ll walk you through:

  • Setting up a cross-compile toolchain in Ubuntu (15.04 Vivid)
  • Setting up the proper exports
  • Compiling a test program for your native and target armhf platform
  • Compiling the latest Raspberry Pi 2 kernel with VC4 support.

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30
Jan

TxMongo – Your Asynchronous MongoDB Twisted Client

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We’re proud to announce the release of 0.6 of TxMongo, which brings SSL support using Twisted’s SSL context factory, “find with cursor” support just like PyMongo, bug fixes and updated unit tests! TxMongo is an asynchronous MongoDB client written for Twisted in Python.

The biggest change is that TxMongo is now sponsored by Amplidata. Through them we were able to get development, bug fixes and Twisted first-party sponsorship online. We now have continuous integration (CI) with a wide matrix of support for py26/py27/pypy using Twisted 12.1 to 14.0 (and trunk). We also now have 78% code coverage with unit testing as a result!

This is also the very last release in the 0.x series before we step over to the “year.release” model used by Twisted, it will also eventually find its way into Twisted’s github organization as a first class library.

You can download TxMongo 0.6.0 and other releases here: TxMongo Github Releases

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22
Dec

Enterprise all your Twisted applications with Ldaptor

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We’re proud to announce the release of 14.0.0 of Ldaptor, now a first party Twisted project! Ldaptor is an asynchronous LDAP (Lightweight Directory Access Protocol) client and server implementation written for Twisted in Python.

The biggest change is that Ldaptor is now sponsored by Amplidata. Through them we were able to get development, bug fixes and Twisted first-party sponsorship back online. We now have continuous integration (CI) with a wide matrix of support for py26/py27/pypy using Twisted 12.1 to 14.0 (and trunk). We also have about 75% code coverage with unit testing!

You can download 14.0.0 and other releases here: Ldaptor Github Releases

For a full review of what has changed, feel free to take a look at our live documentation over at ReadTheDocs: Ldaptor Documentation and the Changelog itself.

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