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.
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
Work in progress, I'll write this up properly when I'm done.
Almost all credit goes to @maxogden for putting me on to this and pointing me in the right direction for each of these items.
Prerequisites:
- Raspberry Pi
- Kindle Paperwhite freed from its locked down state (jailbroken) http://www.mobileread.com/forums/showthread.php?t=198446
- You have to downgrade your Kindle to 5.3.1 to install the current jailbreak; that's just a matter of getting the old version image, putting it on your Kindle via USB and telling it to install "upgrade". Then you put in the Jailbreak files, load the ebook and break.
- Your kindle will be quick to detect an upgrade is available so it'll want to upgrade soon afterwards but the jailbreak will last but you have to reinstall the developer certificates so it's a bit of a pain but doable. Find all the instructions on the mobileread.com forums and wiki.
http://www.raspberrypi.org/phpBB3/
在磁盘中创建备份目录 mkdir /media/usbdisk/mactimebak 推荐使用ext4分区(打开notime)
安装nettalk
Look at LSB init scripts for more information.
Copy to /etc/init.d
:
# replace "$YOUR_SERVICE_NAME" with your service's name (whenever it's not enough obvious)
Gist to describe the process of adding a namespaced isolated Rails Engine
to a typical Rails application and adding methods to one of the Rails Engine's
controller and model.
- Rails applicaiton all by itself.
- Rails application with the Rails Engine (FooBar) mounted.
- Rails applicaiton partially extending a controller/model from the Rails Engine.
#!/usr/bin/env bash | |
uninstall() { | |
list=`gem list --no-versions` | |
for gem in $list; do | |
gem uninstall $gem -aIx | |
done | |
gem list | |
gem install bundler | |
} |
/** | |
* Setup Module with `highlight` filter | |
*/ | |
var JekyllApp = angular.module('JekyllApp', [], function($routeProvider) { | |
}); | |
JekyllApp.filter('highlight', function() { | |
return function(text, filter) { |
# RSpec 2.0 syntax Cheet Sheet by http://ApproachE.com | |
# defining spec within a module will automatically pick Player::MovieList as a 'subject' (see below) | |
module Player | |
describe MovieList, "with optional description" do | |
it "is pending example, so that you can write ones quickly" | |
it "is already working example that we want to suspend from failing temporarily" do | |
pending("working on another feature that temporarily breaks this one") |