Most command line applications usually accept a variety of options that can be passed in to alter the behaviour of the application. For example, in linux, the find command can take a -type d option to specify only search for directories. For example the following command will find all empty directories under ~/Documents:
find ~/Documents -type d -empty
The Observable module is a useful and elegant way to watch for changes in an object in Ruby. A common example is for alerting of some condition within the object being observed. The example shown in the documentation is for a Ticker class which has two observers: one for when the price goes below a certain level and one for when the price goes above a certain level. What we will do today is show something similar, but for a CoffeeShop class instead. Let’s get to it!
Rotati is a full service Web and Mobile application consultancy. We use Ruby and JavaScript as our tools of choice.
