In this series of articles, I will be documenting my process in implementing an APL in Haskell. I've been learning APL for the past year and since the first day I've been wondering how difficult it might be to write an interpreter for a simplified dialect, named TinyAPL. In a somewhat bold choice, I decided to delay parsing until a few articles and weeks into the future. I want to start by implementing the part I'm most interested in, that is, a representation of APL arrays, functions and operat...