||There is a number of recipes which hasn't been started yet. If anybody wants to write them, you're welcome. If you think there are recipes which should be in the book, but are not in the list yet, you're welcome to write them as well.
Testing for Efficiency
Constructing maximal tests with respect to execution time and consumed memory
Working with Numbers (optional)
This can be along the lines of misof's "Representation of Integers and Reals" - explanation of numbers representation and what it means for the programmer
Working with Variable-length Arrays (Vectors)
Working with Maps and Sets
Same as other "working with data structures" recipes - a table of basic operations over all 4 languages, and examples of problems using these operations.
Using Genetic Algorithms