Finding out about "alists" and their lispy incarnation made me so happy. It was just so neat that something in some regards more capable than a typical hash tab

Finding out about "alists" and their lispy incarnation made me so happy. It was just so neat that something in some regards more capable than a typical hash table (key shadowing, references needn't be to the entire structure, ...) could spring to life, expressed in terms of barely anything atop the humble cons cell.