Projects

Algorithms:

• binary-multisearch.h: algorithm for efficiently searching for multiple items
• hungarian-algorithm-n3: minimum bipartite matching algorithm

Application libraries:

• *libcontacts: a library for handling a simple, flexible contact list

Applications:

• blue: print a table of when the blue hour, the golden hour, or whatever you want occurs
• *contacts: a collection of utilities for inspecting and manipulating your contact list
• learn-your-telephone-number: a program to help you learn your telephone number
• *metar: trivial, yet fully fledged, weather report
• mongoclock: just a humongous clock for the terminal
• mongotimer: a humongous timer or stopwatch for the terminal
• *read-quickly: read plain-text files in blazing speed

Astronomy:

• libred: solar elevation and blackbody colour calculation library
• *solar-python: solar data calculation and prediction library for Python

Compiler software:

• libparser: right-context-sensitive grammar parsing library

Desktop software and themes:

• simple-icon-theme: a very simple icon theme
• xcman: minimal compositing manager for X
• xkbdbind: global hotkeys for X
• xpybar: a highly extensible minimalistic dock panel

Developer tools:

• base-util-tests: correctness tests for the base utilities
• gpp: Bash-based preprocessor for anything
• loc: simple C code line counter
• *makeenv: run make(1) with environment loaded from .makeenv

Examples:

• rotation3d: example of how to do rotation in three dimensional space

Graphics:

• coopgammad: cooperative gamma server
  • libcoopgamma: cooperative gamma library
    • pylibcoopgamma: Python 3 wrapper for libcoopgamma
• *libclut: C library for manipulating colour lookup tables
• *libcolour: C colour space library
• libgamma: display server abstraction layer for gamma ramps
  • jlibgamma: Java wrapper for libgamma
  • libgammamm: C++ wrapper for libgamma
  • pylibgamma: Python 3 wrapper for libgamma

Hardware utilities:

• adjbacklight: convenient method for adjusting the backlight on your portable computer
• *cg-tools: cooperative gamma-enabled tools
• crt-calibrator: CRT monitor calibrator utility for Linux VT
• unstickpixels: screen loop to try to unstick stuck dots

Interface libraries:

• libterminput: terminal input parsing library

Interprocess communication:

• bus: a simple daemonless system for broadcasting messages locally
  • python-bus: Python 3 module for bus

Just for fun:

• doughnut.py: doughnut shaped Python 3.8 code that animates a doughnut

Security:

• asroot: a simpler alternative to sudo and doas
  • editasroot: edit a file that requires root access
• blakesum: checksum utilities for the BLAKE-family of hashing functions
• file2key: a simple command that generates a key from a file and a passphrase
• key2root: authenticate with keyfile and run a process as root
• libar2: library for the Argon2-family of hashing functions
  • libar2simplified: façade for libar2
• libblake: library for the BLAKE-family of hashing functions
• *libkeccak: Keccak-family, including SHA-3, hashing library
• libsha1: SHA-1 and SHA-0 hashing library
• libsha2: SHA-2-family hashing library
• sha3sum: SHA-3 and Keccak checksum utility

Support libraries:

• liberror: C library for custom errors
  • liberror-backtrace: backtrace support for liberror
• libhaiku: poetic error messages
• libsimple: a bunch of C functions that are useful when writing simple code
• python-arg: a simple argument parser for Python
• slibc: yet another C standard library

System software:

• alsause: set default ALSA PCM device
• coreupdown: dynamically turn all non-main CPU's on and off
• sleeping-getty: do not start a fullblown getty before it is necessary

Tests and research:

• malloc-vs-new: pipe(7) is slower than unix(7)
• pipes-are-slow: malloc(3) is faster than new in C++

Text libraries:

• libfonts: library for font listing, searching, and configurations
• *libglitter: subpixel-rendering library
• *libparsepcf: C library for interpreting PCF (Portable Compiled Format) font files
• *libparsepsf: C library for interpreting PSF (PC Screen Font) files
• libparsesfnt: C library for parsing SFNT (scalable/spline font) files
• librifunktionsteckensnittsglyfrasteriseringsprogrambiblioteket: font rasterisation library
• libskrift: text drawing library using libschrift
• *libtracebitmap: C library for converting bitmap graphics into vector graphics

Utilities:

• alarm: schedule an alarm for a program when starting it
• bfind: find(1) variant optimised for finding files rather than listing files
• exec-as: a command that lets you start another command with any argv[0]
• krandom: Keccak-based userspace pseudorandom number generator
• median: calculate the median values for a set of groups
• optimised-true: optimised implementations of true(1) and false(1)
• orphan-reaper: place subreapers in your process tree to keep it structured
• pdeath: run a command that is killed when its parent dies
• setpgrp: commands providing access to the setpgrp and getpgrp system calls
• slack: control your timer slack
• sleep-until: sleep until a specified time
• sshexec: SSH wrapper that makes it easy to run commands directly in the SSH command
• timeprefix: prefix each line with the time it as written
• vtchs: listen for console switches
• xtest: variant of test(1) that can test multiple files from cmdline or stdin
• yes-silly: yes(1), silly edition

* marks stable projects that are not completely finished but are not actively being worked on, if you want something to do, take a look at them, with a few exceptions, they shouldn't be too difficult, but at the same they shouldn't be too trivial.

Tips

• Hardening yaourt(8)

Philosophy

• On IDEs
• Make time
• Proverbs

C mastery

• Beyond the debugger
• What is int?
• C99-style MD-arrays
• X macros
• Duff's device
• The three ways to #include

Critique of C++

Until you've seen a real assembly project, you haven't seen clean code.
Until you've seen a real C++ project, you haven't seen nightmare code.
That is the cost of abstraction.

• class is ill-designed
• References destroy readability and more

Bad UX ideas

• QR codes
• Find the application icon is difficult
• My monochrome icon theme
• Subpixel rendered text

Recommended reading

• Code Complete (Steve McConnell)
• The Clean Coder (Robert C. Martin)
• Clean Agile (Robert C. Martin)
• Clean Architecture (Robert C. Martin)
• Clean Code (Robert C. Martin) (Clean Code itself is harmful and fails to deliver what it says on the tin, however the book is still worth while reading)
• Optimizing software in C++ (Agner Fog)
• Optimizing subroutines in assembly language (Agner Fog)
• The microarchitecture of Intel, AMD, and VIA CPUs (Agner Fog)
• Floating point exception tracking and NAN ropagation (Agner Fog)
• Bison (Charles Donnelly, Richard Stallman)
• A Book of Abstract Algebra (Charles C. Pinter)
• Matematiska utmaningar (Paul Vaderlind)
• What Every Programmer Should Know About Memory (Ulrich Drepper)
• Good Practices in Library Design, Implementation, and Maintenance (Ulrich Drepper)
• How To Write Shared Libraries (Ulrich Drepper)
• Utilizing the other 80% of your system's performance (Ulrich Drepper)
• The Art of Computer Programming (Donald Knuth)
• Introduction to Algorithms (Cormen, Leiserson, Rivest)
• The Software Craftsman (Sandro Mancuso)
• Introduction to Automata Theory, Languages and Computation (Hopcroft, Motwani, Ullman)

Harmful reading (or at least a waste of time)

• Code That Fits in Your Head (Mark Seemann)

Location

Contact

E-mail: maandree@kth.se

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