Written by Eric Normand. Published: September 28, 2014
Sign up for weekly Clojure tips, software design, and a Clojure coding challenge.
Om, Figwheel, Sente
Clojure Gazette
Issue 1.95 September 28, 2014
Editorial
Hi Clojurators,
I've been really busy this week. I've been researching and writing summaries and introductions to the Clojure/conj talks. The best way to make the most of your time at the Conj is to be prepared for the talks. There's still time to get prepared. I've also started interviewing the speakers. I'll publish those to the Pre-Conj list when they're ready.
Rackspace wants you to learn their cloud andthey are floating the bill. I've been looking at their services and the flexibility is impressive.OnMetal lets you spin up a physical (not virtual) machine that you control down to the metal.RackConnect lets you mix dedicated servers with elastic instances. But it's daunting to know where to start. That's why the new developer+ program is a great opportunity. Rackspace will give you a$50 credit each month for 12 months to spend however you want. Plus, you can ask for help from Rackspace developers during that time. They will help you choose the mix of services you need for your application.
Thanks, Rackspace, for supporting the Clojure Gazette. Please gosign up for developer+. Put those credits to work!
I think this is an important point to make: nil is not perfect, but it does work well because of the semantics for using nil in Clojure. In Java, not much can be done with null, but in Clojure, it is more useful. This post does a good job of explaining that.
Another library I've been using and enjoying recently. This is a realtime web client/server communication library. It will use websockets or fall through to other technologies, all with the same interface. Very nice when it all starts clicking together.
This library makes developing web clients in ClojureScript into a much more enjoyable experience. It will automatically compile your ClojureScript source each time it changes and notify the client of the change so it can reload it. It means you can type code in one window, save it, and watch the effect almost immediately in the browser. There's a nice intro with a video.
A nice explanation of how to set up Figwheel for use with Om. There are some gotchas that you should be aware of, and this post walks you through avoiding them.
