Functional core, imperative shell is how this is commonly described! https://www.destroyallsoftware.com/screencasts/catalog/functional-core-imperative-shell ht

Functional core, imperative shell is how this is commonly described! https://www.destroyallsoftware.com/screencasts/catalog/functional-core-imperative-shell https://www.destroyallsoftware.com/screencasts/catalog/funct... https://news.ycombinator.com/item?id=18043058 https://news.ycombinator.com/item?id=18043058