====== Coding horrors ======

  * Subsetting data and using the wrong indices
  * Read in files with numerical names in the wrong sort order (1,11,110,...)
  * Duplicated code 
  * Duplicated code where one duplication is a little bit different than the other
  * Detecting the correct text coding of a file
  * Global variables
  * Script files with names which have absolutely nothing to do with their content
  * Variable names which have absolutely nothing to do with their purpose
  * Quick modifications of recursive functions
  * Time zones
  * Reading/Writing contents of PDF files
  * Assuming that someone will create required system setup that you need in your code (do it yourself!)
  * ...

====== Coding hints ======
  * Improve CPP performance by avoiding the heap