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Category Theory for Programmers

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4.29  ·  Rating details ·  66 ratings  ·  11 reviews
Collected from the series of blog posts starting at: https://bartoszmilewski.com/2014/10/2...


Hardcover available at: http://www.blurb.com/b/9008339-catego...
ebook, v1.0.0, 473 pages
Published October 21st 2018 (first published October 28th 2014)
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Tim Poston
Dec 28, 2016 rated it it was amazing
Exciting preface!

I learned my category theory fifty years ago, a decade before I wrote even a line of code (it was in FORTRAN 4), and could not have imagined them coming together. I hope the book appears before I drop off the twig.
Rohit
Oct 27, 2018 rated it it was amazing
I didn't complete the entire book (read until applicatives and Monads), used the book in conjunction with Bartosz video series on youtube and found it very useful to understand the theory behind.
Ivan Andrus
Nov 24, 2017 rated it liked it
I didn't much like Category Theory in college and I was hoping this book would be able to change my opinion. Unfortunately, it didn't quite work. I did think it was well written and illustrated, but I just don't dig category theory, though I'm not sure why. I would like to think I have some good reason for it, but it's probably just that I'm not quite smart enough to really understand it.
Sergey Homa
Oct 18, 2018 rated it it was amazing
one of the best journeys I had (another one was with "operating systems: design and implementation")

here is my lecture notes https://github.com/srghma/category-th...
Борис Кучин
Oct 20, 2018 rated it it was ok
Shelves: computers
* Последние 100 страниц пролистал без всякого понимания, потому что там чего-то совсем сложно всё.
* В целом, почитать про теорию категорий забавно, особенно когда концепции начинают друг на друга наслаиваться, но практической пользы примерно никакой.
* При этом книжка реально требует много думать. Где-то начиная с середины я ещё смотрел видеолекции от автора, но вот к 400 странице перестало хватать даже их. То есть времени нужно вкладывать много (несколько месяцев у меня ушло) и, мне
...more
Paul Kuruvilla
Dec 03, 2017 rated it it was ok
The heavy amount of theory made me abandon this 4 chapters in.

I think the book could've done better by focusing on real life software composition problems and how the theory ties into it, rather than just using code to demonstrate the theory.
Mitchu
Jun 10, 2018 rated it it was ok
Although I like programming and category theory, this book didn't do it for me. Too informal for a subject that needs formality.
Ignacy
Apr 22, 2019 rated it liked it
I started reading this book because I've been doing some Haskell development and I wanted to get some more background behind some of the ideas there. I strongly believe that composability should be the number one factor when judging software quality and elegance in most cases, and this book does pick up this argument early which made me even more interested in reading it.

To be honest now that I did I still kind of think this Haskell/CT stuff is a bit too hand-wavy and not that practical in most
...more
Ubaldo P.
Jan 31, 2019 rated it really liked it
I managed to read the entire book with friends in a local bookclub. I really appreciated its contents. Since my academic background is in Computer Science, I found this book very helpful in understand advanced functional programming topics as functors, monoid and monads.
Personally I found final chapters of part three (e.g.: ends and coends, Lawvere theories, Kan extensions) too abstract and overwhelming.

Eventually, my advice here is to approach this book by interleaving the reading with t
...more
Vaibhav Pujari
Mar 11, 2018 rated it it was amazing
Brilliant
RowanMorrison
Sep 10, 2019 rated it it was amazing
Shelves: education
I'm not sure this book is useful, and most of the topics there are really hard to understand. Yet, I've never had so much fun reading anything. And that's what is important.

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“The usual goal in the typing monkeys thought experiment is the production of the complete works of Shakespeare. Having a spell checker and a grammar checker in the loop would drastically increase the odds. The analog of a type checker would go even further by making sure that, once Romeo is declared a human being, he doesn’t sprout leaves or trap photons in his powerful gravitational field.” 1 likes
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