Thing to love in Clojure
Download as PPTX, PDF3 likes1,212 views
This document lists things the author likes about Clojure including static typing with schema, parallelism with futures, and templating with Hiccup. It also recommends tools and libraries for Clojure projects like Leiningen, linting with kibit and eastwood, testing with Midje, and frameworks like Luminus and RouteOne. Finally, it suggests next steps of installing Clojure and trying a first project using recommended technologies.
![• https://github.com/prismatic/schema
• Install:
• [prismatic/schema “0.2.1”]
• Require:
• (:require [schema.core :as s])](https://image.slidesharecdn.com/how-clojure-helped-me-140408234904-phpapp01/85/Thing-to-love-in-Clojure-4-320.jpg)
Thing to love in Clojure
- 1. Things to in Clojure Jiri Knesl
- 2. Things I already like
- 3. • static typing makes me write types everywhere (inference helps but only a little) • schema allows me to type only in places I like • types are data (you can create them, modify them, merge them) • you can add validators to types (only even size of vector?) • optional keys & Maybe • Disadvantage: magic happens in runtime :(
- 4. • https://github.com/prismatic/schema • Install: • [prismatic/schema “0.2.1”] • Require: • (:require [schema.core :as s])
- 6. Parallelism for free • Simple as (future (do something)) • Or Atoms/Agents… • Or core.async
- 7. One day • One day I improved performance of my application by 100 % • With only a few characters • Without need to think • I put my model queries to (future) and @deref’d them in template
- 8. More parallel/concurrent/async goodness • Software Transactional Memory • Futures, Promises • Actors • Core.async • Actors (more on this later) • Homoiconicity for the great good
- 9. Great presentation on topic “The Future is Parallel, and the Future of Parallel is Declarative” Simon Peyton Jones
- 10. Leiningen everywhere • lein deps (Clojure is just another dependency) • lein kibit & lein eastwood (lint) • lein uberjar • lein midje • …
- 11. Hiccup • Turing-complete templates • Compile-time checking • Adding own helpers & logic became natural • And templates are shorter • With RouteOne
- 13. Things I believe I will like
- 14. Double-check https://github.com/cemerick/do uble-check now you can test on thousands of inputs and then get the minimal input
- 18. Next step • Install Clojure & try your first project • Luminus framework & RouteOne & Hiccup & Midje • Follow @jiriknesl • E-mail me to jiri@sprintmasters.cz (I would be happy to help you with transition to functional programming)