While we were revising for exams in computer science, someone hit on the idea of writing a Programmer's Recipe Book, with things like

#include 
#include 

date dates[] = new dates[10];

int i = 0;

for (i = 0; i < 10; i++) {
    add(dates[i]);
}
while (!mixed) { stir; }

and so on. I think we'd make a fortune.