PDF DOWNLOAD An Outsider’s Guide to Statically Typed Functional Programming Ã Brian Marick
S a rethink of a domain model and a major challenge is getting The Architecture To A architecture to a where such rethinking doesn't have a ripple effect that makes every change hugely expensiveThe programmers who work on mainstream applications are rarely the target audience of the static FP literature They are exactly the target audience for this book My goal is to make the most compelling case I can that static FP will give you new abilities especially new abilities for modeling a messy domain riddled with exceptions to the rules I aim to do that by teaching you idioms habits and design patterns that can make "this style of programming an ordinary practice for " style of programming an ordinary practice for to perform–rather than a pile of ideas for you to connect. .
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Dynamically typed functional languages like Clojure and Elixir are now at "the point where I feel comfortable basing a commercial application "point where I feel comfortable basing a commercial application on If you use Clojure of Java or Elixir and Phoenix instead of Ruby on Rails you'll be fine Your app might still fail but it won't be because of the technology stackStatically typed functional languages like Elm Purescript Haskell or Idris are definitely becoming popular but in my opinion are not clearly safe bets for mainstream applications By mainstream I mean Applications that reuire only ordinary reliability I sometimes see HTTP 500 errors on websites I shrug and try again Netflix via my Fire media player occasionally gets stuck loading a TV Show I Shrug Bac. show I shrug bac. K out click on the show again and it works This Restriction To Ordinary Reliability Matters Because The Static FP restriction to ordinary reliability matters because the static FP are much obviously useful in cases where runtime errors can kill people Applications that work in messy domains Messy domains are ones like payroll systems that have
"To Deal With Decades Of "deal with decades of cases negotiated by unions Or enterprise applications with a long history of salespeople making special deals to close big sales–deals that reuire special case code somewhere in the system Or generally any application in direct contact with people who can't be forced to behave in a application in direct contact with people who can't be forced to behave in a lawful way Applications that are continuously growing new features Sometimes one of those features force.