© Kit Eason 2018
Kit EasonStylish F#https://doi.org/10.1007/978-1-4842-4000-7_11

11. Railway Oriented Programming

Kit Eason1 
Farnham, Surrey, UK

On two occasions I have been asked, “Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?” I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question.

—Charles Babbage, Computer Pioneer

Going Off the Rails

Railway Oriented Programming (ROP) is an analogy invented by F#’s premier educator, Scott Wlaschin. It describes a programming philosophy in which we embrace errors as a core part of program flow, rather than exiling them to the separate domain of exception handling. Scott didn’t invent the technique, but he did ...

Get Stylish F#: Crafting Elegant Functional Code for .NET and .NET Core now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.