Haskell Programming From First Principles

Haskell Programming From First Principles[Reading] ➺ Haskell Programming From First Principles By Christopher Allen – Oaklandjobs.co.uk I am writing this book because I had a hard time learning HaskellIt doesn't have to be that way I've spent the last couple years actively teaching Haskell online and in person Along the way I started I am writing this From First Epub ß book because I had a hard time learning HaskellIt doesn't have to be that way I've spent the last couple years actively teaching Haskell online and in person Along the way I started keeping notes on exercises and methods of teaching specific concepts and techniues in Haskell that eventually turned into my guide for learning haskell That experience led me to work on this bookIf you are new to programming entirely Haskell is a great first language You may Haskell Programming PDF/EPUB ² have noticed the trend of Functional Programming in Imperative Language books and tutorials and learning Haskell gets right to the heart of what functional programming is Languages such as Java are gradually adopting functional concepts but most such languages were not designed to be functional languages after all We would not encourage you to learn Haskell as an only language but because Haskell is a pure functional language it is a fertile environment for mastering functional programming techniues That way of thinking and problem Programming From First Epub â solving is useful no matter what other languages you might know or learnHaskell is not a difficult language to use uite the opposite I'm now able to tackle problems that I couldn't have tackled when I was primarily a Clojure Common Lisp or Python user Haskell is difficult to teach effectively. My relationship with the Haskell programming language my efforts to learn it had its ups and downs throughout the years According to my memory and the archives of my blog my first attempts had been around 2005 – 2006 than 12 years ago Back then apart from a few books written by university professors and some Wiki based books I couldn’t find much high uality material for beginners Therefore my efforts didn’t last very long A few years later I heard the news about a new book “Real World Haskell” being written I was excited once again I even made a few comments here and there as the book was being written Unfortunately life happened and I couldn’t spend much time on that nice book too Fast forward to the end of 2015 and I was working at a company in Ghent Belgium where there were some Haskell experts trying out things in an industrial storage system development environment The teams that I was part of had nothing to do with Haskell though my daily job was almost always about Python Bash ActionScript Java and some Scala Nevertheless being in such an environment rekindled my curiosity and I decided to look around to see if there was some new Haskell books targeted at people who didn’t use this language before Luckily I’ve heard about the book “Haskell Programming from First Principles“ and I decided to give it a try Therefore I bought the book and started to read and study it in the beginning of 2016 Since Haskell was not at all used in my daily job I could study the book only in my spare time therefore it took me about 1 year to finish the book doing most of the exercisesIt is not easy to review such a book and I won’t I claim to do justice to such a massive tome Instead of trying to motivate the curious reader I’ll briefly write about my background motivation and what led me to this book If you have a similar background and motivation you can draw your own conclusions First a bit of background Before tackling this book seriously I’ve spent my professional life in various software intensive systems but I’ve never used Haskell or many of other strongly statically typed functional programming languages such as O’Caml F# or SML in an industrial practical setting working within big teams The only exception to the previous sentence is Scala programming language which I’ve studied and used briefly in some very small projects mostly for small tasks as part of bigger commercial projects In other words I’ve spent most of my programming life using languages such as C VBScript VBA SL PLSL T SL PHP Python ActionScript C# Java ActionScript and BashApart from my professional and commercial use of programming languages I’ve had my fair share of Common Lisp and some Emacs Lisp for a few years in an academic setting I’ve also dabbled a little in Prolog and Erlang as well as played with various constraint satisfaction paradigms using MozartOz programming environment As for my academic education background I had a lot of math courses including abstract algebra topology etc therefore I knew what von Neumann meant when he said “In mathematics you don’t understand things You just get used to them” In other words technical terms such as isomorphism homomorphism groups algebras wouldn’t scare me away and I always liked a proof on a good day as long as it was also backed by some examplesWith that background I wanted to spend time to learn what it really means and feels like to use purely functional programming language that is a testbed of state of the art programming language research as well as a strong tool used in different commercial and open source projects I also wanted to have some kind of intellectual stimulation after having used mostly imperative and object oriented languages for so many years languages that seemed different but the same The rest of my review is at due to Goodreads characteer limits I'm not finished working through this book yet but it really is phenomenal The authors fuse theory and practicality in a way I don't think I've seen done so effectively in any other instructional text A lot of the beauty of this book comes from Haskell itself syntax reflects conceptual structure complex ideas follow naturally from simpler ideas thoughtful approaches make intricate problems much linear etc The thing is that other educational Haskell texts manage to complicate and confuse despite the fact that Haskell is so well designed to be taught because they don't look to the language for guidance on how it should be taught whereas the authors here really try to do exactly what the title says teach from first principles When done this way learning Haskell is constantly challenging but never frustrating and often really beautiful Although it covers Haskell and FP in good detail reading almost every chapter feels uite unsatisfying The author deliberately does not go into depth or explanation of certain concepts not showing where the bottom of those concepts are and leaves it for later Which they scratch the surface of next time and then next time and so on It constantly makes me feel like I still don't have the full picture FP is a complicated topic indeed but reading this book feels like you're being spoon fed a bit too much Some trivial things are explained to every single detail whereas some complicated ones are sometimes explained with very little detail Exercises can be fairly trivial and repetitive Even though I am being critical here I realise the authors have their own style and I still enjoyed reading it Reading this book was a slight deception not because of the content but mailny because it's a bit messy The chapters don't correlate with each otehr very well and the content is not as well organized as I was expecting Aside from that I believe I learned something new This book is the greatest programming book I have ever read and I've read a lot of them This book is an excellent guide to learning Haskell It is intuitive describes the language incredibly well and really teaches you the language I've never before been captivated like this by a programming book Tip of my hat to the authors If you are interested on Haskell or in the functional programming paradigm this is a must read book This book is an amazing work Its 1300 some pages walk the reader from entering simple expressions into the REPL through all the big concepts that make Haskell scary There are plenty of examples lots of code to read and try on your own and plenty of discussion sometimes multiple approaches to a single topic It is exhaustive approachable and seems uite free of errorsSo you ask why only 4 stars? Well although it is a brilliant book this is a warning that it may not be the book for you As a metonymic example explanations of Monads are a trope on the internet Many people feel once their own understanding is clear that they better than the hundreds that have gone before can explain the concept clearly The truth is simply that different people just achieve understanding differentlySimilarly as is evidenced by the tens of readers that have loved this book it might well be your path to understanding Haskell If that is your goal the sheer amount of work the authors put into this book certainly should earn it a chance It is absolutely the case that it would be impossible to read it in its entirety without learning a lot of Haskell If however you find the constant forward references and the informal approach to syntax frustrating there may be a faster shorter path Not all the way done yet but neither is this book The five stars are to encourage others to give it a try and to let the authors know my appreciation Already over 1000 pages this book is full of examples and exercises than you could ever need to understand Haskell It's extremely comprehensive and excellent I've read and tried to read a few other books on Haskell but this one does the best job by far of making the material accessible to someone who hasn't already done a PhD in some obscure subfield of Math or Computer ScienceThis book is very incremental and builds your understanding slowly but surely And with Haskell that seems the best way to gain actual understanding This won't be a uick read I'm about 800 pages in and still have a ways to go But take it slow enjoy it and your time will be rewarded Thanks Chris I'll admit I did not uite finish this book; I lost steam and patience somewhere within Monad Transformers and never really found the desire to come back again I had previously read Learn You A Haskell for Great Good which I imagine is the background a fair portion of people have Learn you a Haskell for its concise joke laden exposition did have some shortcomings which given it is free I can't grumble about all that much I hoped this book would fix those and it mostly doesUnfortunately it brings in some new ones in the processFor one it trades that conciseness for verbosity which is not necessarily a bad thing longer explanations from multiple angles can be useful when trying to understand abstract concepts In this case however I think it goes too far in the opposite direction this book really needs an editor to go through and cull some of that excess I firmly believe this book could be half the size without sacrificing much at allThe other issue it attempts to correct from LYAH is having exercises The issue with these and often with the exposition as well is they focus solely on the concept being presented eschewing everything else meaningless typevariable names writing than the tiniest snippets of code such that the exercises can become extremely monotonous and give little or no idea of real usage ie why do I care about this?This all makes the book feel like a real slog to get throughIn the end a number of concepts did stick so it was useful from that perspective I can't say I particularly enjoyed the ride though and I have extreme skepticism that all but the most dedicated beginners would manage to slog through the whole thing This book is a labyrinth presented as a learning path It has multiple dead ends and frustrating skims over material that made me rage uit The authors do not expect the reader to understand everything the first time read the book They do not expect you to finish every exercise they state this much from the outset The authors though do not state WHICH things they do not expect you to understand the first time or WHICH exercises you won’t be able to complete Sure that will vary from reader to reader but if you don’t heed this warning you will waste too much time spinning out over trivial bitsMy recommendation is this if you don’t understand something by the end of the chapter Google it You might end up ahead of the game sometimes but you may find another explanation that may better suit your learning styleDon’t sweat needing a break here and there I took several throughout and I came back to the book ready to take on another partOverall the book is one whose approach I could not appreciate until I had finished it In later sections the book explained most frustrations I experienced The book knows this and tries to tell you this But being a 1200 page book you will have doubts Yes you need to wait until the end to understand IO and Exceptions I appreciated the prior chapters’ knowledge when digging into those monsters