A Brief Introduction to Esoteric LanguagesIt’s implementation-defined what happens if you decrement a 0 cell or move the pointer past the last cell. Every compiler and runtime would make its own decisions. Every other symbol is a noop, which 1) makes brainfuck relatively easy to comment, and 2) means you can secretly embed brainfuck programs in other language programs (multicoding). Brainfuck is in the class of “Turing tarpits”, languages
