functional core, imperative shell.md

programming, when stripped of all its circumstantial irrelevancies,
boils down to no more and no less than very effective thinking so as to avoid unmastered complexity,
to very vigorous separation of your many different concerns.
-- Dijkstra EDW512
https://www.cs.utexas.edu/users/EWD/transcriptions/EWD05xx/EWD512.html

Functional core, Imperative shell

"Boundaries" - Gary Bernhardt
https://www.youtube.com/watch?v=yTkzNHF6rMs
https://www.destroyallsoftware.com/talks/boundaries

there are only two roles of code - John Sonmez
https://simpleprogrammer.com/2012/10/21/there-are-only-two-roles-of-code/

Object layer, valuelayer (27:53-) - Andy Matuschak
https://realm.io/news/andy-matuschak-controlling-complexity/

"Functional core & Imperative shell" : OO design, and isolated tests without mocks
http://blogs.perl.org/users/mascip/2014/06/functional-core-imperative-shell-oo-design-and-isolated-tests-without-mocks.html
http://blogs.perl.org/users/mascip/2014/06/functional-core-imperative-shell-explanation-with-code.html

Business-Friendly Functional Programming, Part 2: Testability - Yang Bo
http://rea.tech/business-friendly-functional-programming-part-2-testability/

mokacoding - unit and acceptance testing, automation, productivity
http://www.mokacoding.com/blog/functional-core-reactive-shell/

Functional Core, Imperative Shell - Sean Hammond
http://www.seanh.cc/posts/functional-core-imperative-shell

BoochTek, LLC
http://blog.boochtek.com/category/programming/architecture

Slides/books mentioning "functional core, imperative shell"

Functional Programming in Ruby - Vitor Capela
https://speakerdeck.com/dodecaphonic/functional-programming-in-ruby

Enemy of the State by Justin Spahr-Summers
https://speakerdeck.com/jspahrsummers/enemy-of-the-state

Functional Programming in Swift - slide 55+
http://www.slideshare.net/SaugatGautam2/functional-programming-in-swift

Test-Driven Development with Python - Harry Percival
https://books.google.dk/books?id=fTLJAwAAQBAJ&pg=PA403&lpg=PA403&dq=%22functional+core%22+%22imperative+shell%22&source=bl&ots=A4g25w7wWY&sig=x0bu4NZWiXrpzWPziAH7Y78AKgM&hl=en&sa=X&ved=0ahUKEwi0jq3em-zPAhUqG5oKHYNJBIE4ChDoAQhRMAk#v=onepage&q=%22functional%20core%22%20%22imperative%20shell%22&f=false

Test isolation - nomock

https://www.destroyallsoftware.com/blog/2014/test-isolation-is-about-avoiding-mocks

To Kill a Mockingtest - Ken Scambler
http://rea.tech/to-kill-a-mockingtest/