john2x

Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors and Sequences

rxaviers

People

:bowtie:	😄 :smile:	😆 :laughing:
😊 :blush:	😃 :smiley:	☺️ :relaxed:
😏 :smirk:	😍 :heart_eyes:	😘 :kissing_heart:
😚 :kissing_closed_eyes:	😳 :flushed:	😌 :relieved:
😆 :satisfied:	😁 :grin:	😉 :wink:
😜 :stuck_out_tongue_winking_eye:	😝 :stuck_out_tongue_closed_eyes:	😀 :grinning:
😗 :kissing:	😙 :kissing_smiling_eyes:	😛 :stuck_out_tongue:

gerritjvv

(comment 
This is the easiest and most concise way of calling an external process in Java. The inheritIO methods causes the command to output stdout and errout to the same place as your current process (which most of the times is the console), no need to create mechanisms for reading asynchronously from input streams to get at the information.

http://docs.oracle.com/javase/7/docs/api/java/lang/ProcessBuilder.html
)

(def ret (.waitFor (-> (ProcessBuilder. ["gzip" "-t" "g.txt.gz"]) .inheritIO .start)))

cobyism

Deploying a subfolder to GitHub Pages

Sometimes you want to have a subdirectory on the master branch be the root directory of a repository’s gh-pages branch. This is useful for things like sites developed with Yeoman, or if you have a Jekyll site contained in the master branch alongside the rest of your code.

For the sake of this example, let’s pretend the subfolder containing your site is named dist.

Step 1

Remove the dist directory from the project’s .gitignore file (it’s ignored by default by Yeoman).

Fab1en

// for debug : trace every event
/*var originalTrigger = wp.media.view.MediaFrame.Post.prototype.trigger;
wp.media.view.MediaFrame.Post.prototype.trigger = function(){
    console.log('Event Triggered:', arguments);
    originalTrigger.apply(this, Array.prototype.slice.call(arguments));
}*/


// custom state : this controller contains your application logic
wp.media.controller.Custom = wp.media.controller.State.extend({

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD