Month: September 2014
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Showing urgent (flashing) windows on all desktop in LXDE’s taskbar (window list) in Lubuntu
As it stands, lxpanel’s taskbar plugin (part of the LXDE desktop you get with Lubuntu) does not show urgent (flashing) windows if they are on a different virtual desktop from the one you are looking at. This seems wrong to me (I logged Bug 682), and th…
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Launch an urgent window using Python and Xlib with the UrgencyHint flag
I am trying to fix a bug in lxpanel’s taskbar plugin, and needed to launch an urgent window. Here’s how I did it in a little python. #!/usr/bin/python # urgent.py — launch an urgent window (Copyright messages are at the bottom) # To use: # sudo apt-…
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Android programming – a non-Android, Android Game
Series: Setup, Menu, Drawing, non-Android, Working, Saving state We’re planning to write an Android game. So why would we deliberately avoid Android while we’re writing it? To make sure we’re not overly-dependent on the Android ways of doing things, an…
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Android programming – drawing bitmaps in a game loop
Series: Setup, Menu, Drawing, non-Android, Working, Saving state I will be talking about how to write Android programs that share code with non-Android programs. The program I will be writing is a simple game. This time we’re writing a game loop and dr…
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Writing: Testing Times
My latest Becoming a Better Programmer column is published in the September issue of C Vu magazine (26.4). It called Testing Times and surveys the world of developer testing, covering the what, why, and how of programmer-driven testing. We look …
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Writing: Testing Times
My latest Becoming a Better Programmer column is published in the September issue of C Vu magazine (26.4). It called Testing Times and surveys the world of developer testing, covering the what, why, and how of programmer-driven testing. We look …
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Don’t use email auto-forwarding (emails will go missing)
I’ve been trying to chase down a mysterious problem with emails going missing. The problem with things being missing is that you can’t see them, so it has been difficult to track down exactly what’s going on, but it became clear that we were receiving …
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Fetchmail “mda” option makes emails bypass the spamassassin filter in postfix
I have spent several months with no spam filtering in my postfix+dovecote+spamassassin+fetchmail+procmail setup, and no idea why. I had spamassassin enabled and working when I piped emails into it manually, and I had lines like this in my postfix maste…
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Android programming – a menu using Activities and Intents
Series: Setup, Menu, Drawing, non-Android, Working, Saving state I will be talking about how to write Android programs that share code with non-Android programs. The program I will be writing is a simple game. This time we’re making a simple menu struc…
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Raspberry Pi Minecraft Python summer project screenshots
[Screenshots of Minecraft on the Raspberry Pi can’t be made with VNC or screenshot tool like scrot, but they can be made with the excellent raspi2png.] We did some Python programming in Minecraft on the Raspberry Pi for our summer projects. Child 2 m…
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Predictive Models of Development Teams and the Systems They Build
In 1968 Melvin Conway pointed out a seemingly inevitable symmetry between organisations and the software systems they construct. Organisations today are more fluid than 40 years ago, with short developer tenure, and frequent migration of individuals between projects and employers. In this article we’ll examine data on the tenure …
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Predictive Models of Development Teams and the Systems They Build
In 1968 Melvin Conway pointed out a seemingly inevitable symmetry between organisations and the software systems they construct. Organisations today are more fluid than 40 years ago, with short developer tenure, and frequent migration of individuals between projects and employers. In this article we’ll examine data on the tenure …
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Android programming – setting up Android Studio
Series: Setup, Menu, Drawing, non-Android, Working, Saving state I will be talking about how to write Android programs that share code with non-Android programs. The program I will be writing is a simple game. First, how to set up Android Studio:
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How to write a company-mode backends
In Emacs, company-mode (short for “complete anything”) is a framework for performing completion in buffers. It’s an alternative to the popular auto-complete-mode. company-mode supports extension via backends which provide the framework with lists of possible completions in various contexts. So, for example, there’s a backend that provides completion support for …
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Writing the Simplest Emacs company-mode Backend
In Emacs, company-mode (short for “complete anything”) is a framework for performing completion in buffers. [1] It’s an alternative to the popular auto-complete-mode. company-mode supports extension via backends which provide the framework with lists of possible completions in various contexts. So, for example, there’s a backend th(at provides completion …
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How to write a company-mode backends
In Emacs, company-mode (short for “complete anything”) is a framework for performing completion in buffers. It’s an alternative to the popular auto-complete-mode. company-mode supports extension via backends which provide the framework with lists of possible completions in various contexts. So, for example, there’s a backend that provides completion support for …
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Writing the Simplest Emacs company-mode Backend
In Emacs, company-mode (short for “complete anything”) is a framework for performing completion in buffers. [1] It’s an alternative to the popular auto-complete-mode. company-mode supports extension via backends which provide the framework with lists of possible completions in various contexts. So, for example, there’s a backend th(at provides completion …