Rho, rho, rho of X Always equals 1 Rho is dimension, rho rho rank. APL is fun! Richard M. Stallman, 1969 GNU APL is a free interpreter for the programming language APL. The APL interpreter is an (almost) complete implementation of ISO standard 13751 aka. Programming Language APL, Extended. The APL interpreter has implemented: nested arrays and related functions complex numbers, and a shared variab
