Not angband per se, but a really wild way to deal with sets of function pointers

[Pete Mack]

https://github.com/Leushenko/C99-Lambda/blob/master/examples.c

Really impressive use of c macros to write a subset of lambda calculus. Possq Use cases in angband (if we were crazy enough to use it) would be a more elaborate knowledge menu and the various menu skins.