A one-page sheet with the basics for creating Reagent components for use with Re-frame. Get started with Re-frame right away.
Download Resources
PDFs, code, and other downloads to help you learn
Ring Spec to Hang on the Wall
If you program the web in Clojure, you probably use Ring. Even if you don鈥檛, your server is likely聽Ring compatible. Ring has a small SPEC. It鈥檚 centered around defining the keys one can expect in the request and response maps. And the exact names for keywords are easy to forget. I don鈥檛 want to forget. […]
TDD in Emacs Clojure Reference Sheet
These are all of the commands Eric uses to do TDD in Cider.
The Ultimate Guide to Clojure Concurrency Code
Code to accompany The Ultimate Guide to Clojure Concurrency and the Clojure Concurrency Course. It’s example code for a variety of concurrency primitives.
Written Guides
Pragmatic and in-depth guides to a topic.
Re-frame, a Visual Explanation
We look at a sequence diagram to organize the parts of Re-frame.
React Lifecycle for Re-frame
Learn the 4 React Lifecycle Methods you’ll need to know for Reagent/Re-frame and why the other 6 are not needed.
State in Re-frame
Re-frame gives us several places to put our state. So how do we choose? It turns out the decision is easy.
The 5 hurdles of hirability
Find out the two types of jobs that tell you how much you need to learn to be hirable.
The Re-frame Building Blocks Guide
Re-frame adds a beneficial amount of structure to your frontend app. This guide goes over all of the pieces of that structure and how to use them.
The Ultimate Guide to Clojure Collections
Clojure’s collections are central to Clojure programming. While in most languages, you might find collections somewhere in the standard library, in Clojure, they are front and center.
Video Courses
Screencasts, Whiteboards, and Slides produced to help you learn
Concurrency
You’ve heard that Clojure is great for concurrency. But what tools does Clojure give you? And how should you use those tools?
These lessons are meant to each answer a specific question and help you build the skills you need to address a wide variety of concurrency problems.
core.async Patterns
Clojure core.async provides basic building blocks for communication and coordination. This course explores ten patterns you can easily implement using those building blocks.
Data Formats
With so many data formats out there, it’s good to see some example code for reading and writing different formats. I’m talking JSON, CSV, EDN, and more. This course explores how to read and write data formats using Clojure.
Data Modeling in Clojure
In Clojure, the common advice is “just use a map”. There’s some truth to that, but it’s obviously more complicated. Clojure gives you lots of ways to model a problem. In this course, I give you a peek behind the curtain. I work step-by-step through different iterations of a domain model, discussing what I’m thinking, why I’m trying something else. We model the game of solitaire, a card game we’re all familiar with.
Destructuring
Ever wonder how to read those destructuring forms? Do you want to know how to make your code clearer and shorter? Where can destructuring be used? And how do you construct each one? This course starts from the basics and works through all of the destructuring forms, ending with some examples and advice for using them.
Video Lessons
Parts of courses on specific topics
Analyzing recipes
We make note of some duplication and make a plan for removing it.
Appendix: Creating a Leiningen project
If you’re curious about how the Leiningen project we used was created, I walk through the steps of creating a new project and setting up the bakery dependency.
Applicative Functor
Applicative functor is the topic of this video. It is a type of Functor that is extended to let you apply a functor of functions to a functor of its arguments.
apply
This lesson teaches what apply does, how you can implement it, and when you’d want to use it. This lesson includes a video screencast. The video is 6 minutes long.
Assembly Line (Coordinating Between Processes)
In this lesson, things start getting serious. You’ve hired more workers, now they need to work together to build cars. And the common technique in factories is to use an assembly line. Learn to create patterns of communication between your processes using channels.
Associate key and value Access Pattern
We look at another common access pattern, which is to associate a key and a value into a collection. The two collections that this works with are HashMap and Vector. Combined with Lookup value by key, we can do a convenient update operation.
Technical Articles
Tricks for Java interop
There are several features of Java that generate weird classnames. We look at how to refer to them from Clojure.
Why Functional Programming?
There are many reasons to learn Functional Programming. I go over my 11 favorite reasons. Reason #1 is it’s fun!
Why Re-frame instead of Om Next
I had to choose between Re-frame and Om Next when building a course. Here are the reasons why.
Wrangling Clojure Stacktraces
Clojure error messages and stacktraces are the number one most complained-about feature of Clojure. We look at some tips and resources for dealing with them.
Speaker Interviews
Asher Coren Clojure/conj 2016 Interview
We interviewed Asher Coren about his upcoming Clojure/conj 2016 talk.
Bill Piel Clojure/conj 2016 Interview
We interviewed Bill Piel about his upcoming Clojure/conj 2016 talk.
Brandon Kase Curry On 2017 Interview
We Interviewed Brandon Kase about his upcoming Curry On talk called Composable Caching in Swift.
Brian L. Troutwine Lambda Days 2017 Interview
We interviewed Brian L. Troutwine about his upcoming Lambda Days 2017 talk.
Caitie McCaffrey YOW! Sydney 2016 Interview
We talked to Caitie McCaffrey about her upcoming YOW! Sydney 2016 talk.
Chris Birchall Interview
Chris Birchall will be speaking at Lambda World 2016. I interviewed him about his talk.
Newsletter Issues
PurelyFunctional.tv Newsletter 292: Composition, Modeling, Scope
Issue 292 – September 17, 2018 路 Archives 路 Subscribe Hi Clojurers, Well, I’m looking forward to getting back into the swing of things after a few weeks of moderate work on PurelyFunctional.tv due to the birth of my daughter. Have I missed anything in the Clojure world while I was out? Let me know. […]
PurelyFunctional.tv Newsletter 291: Metaphor, Puzzles, Ions
Issue 291 – September 10, 2018 路 Archives 路 Subscribe Hi Clojurers, Please enjoy the issue. Rock on!Eric Normand <eric@purelyfunctional.tv> PS Want to get this in your email? Subscribe! Hire me to train your team I have a couple of spots open for client work. I’m currently offering two specialized services: Clojure Kickstart is training […]
PurelyFunctional.tv Newsletter 290: Generative, Non-events, Hammocks
Issue 290 – September 03, 2018 路 Archives 路 Subscribe Hi Clojurers, Please enjoy the issue. Rock on!Eric Normand <eric@purelyfunctional.tv> PS Want to get this in your email? Subscribe! The Big Elixir Giveaway My friends are running an Elixir conference called The Big Elixir here in New Orleans in November. They offered me two free […]
PurelyFunctional.tv Newsletter 289: More Spec, Fewer Classes, Threading Macros
Issue 289 – August 27, 2018 路 Archives 路 Subscribe Hi Clojurers, I’ve got a new addition to the family, so this editorial is going to be short. Done! Please enjoy the issue. Rock on!Eric Normand <eric@purelyfunctional.tv> PS Want to get this in your email? Subscribe! Why is making something first-class the key to expressivity? […]
PurelyFunctional.tv Newsletter 288: Clojure Spec Tools
Issue 288 – August 20, 2018 路 Archives 路 Subscribe Hi Clojurers, I’ve been doing a lot of research into Clojure Spec this week. One of the cool things about Spec is that it’s built at a rather low level. It is made to be used as a collection of tools for more powerful things. […]
PurelyFunctional.tv Newsletter 287: DataScript, GraphQL, CRDTs
Issue 287 – August 13, 2018 路 Archives 路 Subscribe Hi Clojurationists, I’ve just been digging this lovely tweet from Alex Miller. Rock on! Eric Normand <eric@purelyfunctional.tv> PS Know a friend who might like this? Ask them to subscribe! The #1 Most Important idea in Computer Science Podcast On my podcast, I talked about what […]