lenses, the store comonad, cellular automata, convolution,zippers. "whenever you see large datastructures pieced together from lots of small but similar comput

lenses, the store comonad, cellular automata, convolution,zippers. "whenever you see large datastructures pieced together from lots of small but similar computations there's a good chance that we're dealing with a comonad" http://www.haskellforall.com/2013/02/you-could-have-invented-comonads.html http://www.haskellforall.com/2013/02/you-could-have-invented... (The Builder Pattern, The Iterator Pattern, The Command Pattern)