I delivered a bizarre product for PSYOP [1] that involves crafting "lines of persuasion" for target audiences; another that prescribes chemotherapy regimens based on genetic profiles of tumors; and finally a wiki → docbook → latex compiler for textbooks.
A few things that really came in handy: XML ↔ S-expression equivalence (for writing functional XML parsers); code-data unification (for structurally composing documents); arbitrary precision arithmetic; etc.
A few things that really came in handy: XML ↔ S-expression equivalence (for writing functional XML parsers); code-data unification (for structurally composing documents); arbitrary precision arithmetic; etc.
[1] http://en.wikipedia.org/wiki/Psychological_Operations_(Unite...