© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022
K. EasonStylish F# 6https://doi.org/10.1007/978-1-4842-7205-3_11

11. Railway Oriented Programming

Kit Eason1  
(1)
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 ...

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