Trying SQLAlchemy for Python
Install SQLAlchemy This is easy (using pip): pip install sqlalchemy Learn SQLAlchemy This tutorial uses an in memory SQLite database, which is cool in itself. Various topics: Indexes
Month April 2012
How to install gfortran on Mac OS X
Why did I install gfortran? Well, not to write Fortran programs. I tried installing SciPy using pip install scipy, and I got a message that a Fortran compiler was needed. Install This is how I installed gfortran on my Mac:…
Calling __init__() on all base classes in Python multiple heritance
Here is an example of calling __init__() for all base classes, when doing multiple inheritance in Python (mixins). It uses *args and **kwargs syntax:
Getting up to speed with Git
This is how you can get started successfully using Git. Basic concepts: Git Tutorial (by Lars Vogel) how successful developers are using Git:A successful branching model for Git (Gitflow) Online books: Pro Git and Git Community Book Additional things to…
Pyramidal tile cache cheat sheet
This table lists the number of total tiles for increasing zoom-level in a tile cache. The tile cache is assumed to be pyramidal: . level 1: 1 tile level 2: 5 tiles level 3: 21 tiles level 4: 85 tiles…
Creating plots in LaTeX with Gnuplot and Tikz
Plotting data in LaTeX is a useful thing to do. Xavier Delaunay shows how to do it on his homepage: The plot looks like this:
Simulating the Golden Balls game show
In this eposide of Golden Balls, an inspired event takes place: I retold the event at DIKU APL lunch (nice to have a job where game theory is a valid conversation topic), and we had a conversation about it. At…
Simple programs for simple turing machines
I’ve always wanted to understand Turing Machines better. I believe that the best understanding comes from the intuition developed by solving puzzles. So here, I give myself some challenges. Solve simple problems by writing programs for a simple Turing Machine,…