{Functional data structures in \TeX}
{Julien Cretel}
{Because \TeX\ lacks rich data structures, implementing even simple yet useful
algorithms in it can be laborious. However, \TeX\ is, in many ways, remarkably
similar to functional programming languages, which are often praised for their
expressive power.
Building on Alan Jeffrey's approach to embedding elements of the lambda
calculus in \TeX\ (see Alan's \pkgname{lazylist} package), I plan to demonstrate
how to implement and use richer data structures (such as binary search trees)
in \TeX\ \& friends.}