The minimum code you'll have to write is first, of course, the code -for the genotype structure. Then, the representation-dependent +for the genotype structure. Then, the representation-dependent code: intialization procedure(s), variation -operators (quadratic crossover, mutation operator), ... and evaluation +operators (quadratic crossover, mutation operator), ... and evaluation function - and that's it : we have prepared some template files and the script create.sh that will take care of generating a few other files to make your application complete.