The programmer's primary weapon in the never-ending battle against slow system is to change the intramodular structure. Our first response should be to reorganize the modules' data structures. Fred Brooks
It is better to have 100 functions operate on one data structure than to have 10 functions operate on 10 data structures. Alan Perlis
Bad programmers worry about the code. Good programmers worry about data structures and their relationships. Linus Torvalds
Smart data structures and dumb code works a lot better than the other way around. Eric S. Raymond