Greetings, Very clear explanations, rewriting lambdas as a function was the key to understand it. Did not know was a lisp inspiration. My mind still spiralling XD Kind Regards, Abdur-Rahmaan Janhangeer about <https://compileralchemy.github.io/> | blog <https://www.pythonkitchen.com> github <https://github.com/Abdur-RahmaanJ> Mauritius