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Once you have named your event, the Add Event screen opens, as shown in Figure 8-12. Here, you can update the event name and/or location, and specify when the event starts and ends, whether it repeats, and when to play an alert to notify you about the event. You can also add a note about the event. Customize any or all of these options, as described in the following sections, and then tap Done to finish adding the event. Tap Cancel if you want to return to the List, Day, or Month view without adding that event.

In a JavaScript object, the purpose of the prototype object is to hold all the properties that will be inherited by all the instances. The prototype object defines the structure of an object, in a manner similar to what is done with classes in many object-oriented languages. In the previous section, you saw how a function the constructor can be used to create custom objects and to add properties to the instances. Listing 3.3 shows how you can use the constructor s prototype object to add additional properties and methods to instances.

Note Many UNIX-based systems, including Linux distributions and Mac OS X, come with a version of Python preinstalled. You can check whether Python is installed on your system (and which version you have) by issuing the command python version at the shell prompt or in a Terminal window. If Python is not installed, or the version installed is not compatible with Couchdbkit, visit http://www.python.org/download to download a suitable version for your operating system.

Figure 2-8. The iPod s suggestions appear just below the word you type. Tap the spacebar to accept the suggestion, or tap the word you re typing to disable automatic correction for that word.

With the prerequisites installed, you are almost ready to install Couchdbkit. The easiest way to do so is using easy_install, which requires that a recent version of setuptools be installed. If it is not (or you are not sure), issue the following commands in your shell or Terminal window:

function Cat() { this._name; this._age; } Cat.prototype.speak = function() { alert("Meeeeooow!"); }

Figure 2-9. The iPod s spyglass offers a magnified view that makes it easy to position the cursor exactly where you need it to be.

curl -O http://peak.telecommunity.com/dist/ez_setup.py sudo python ez_setup.py -U setuptools With easy_install available, you can now proceed to install pycurl by issuing this command: sudo easy_install -U pycurl With pycurl installed, you are now ready to install Couchdbkit. This is as simple as entering the following command: sudo easy_install -U Couchdbkit This will download Couchdbkit and its dependencies (simplejson, restclient, and httplib) and install them for you automatically. When it s finished, you re ready to start developing CouchDB applications in Python! Open the Python interpreter by issuing the following command in your shell or Terminal window: python Now let s start using Python to work with the CouchDB server. First things first, let s create a CouchDB database. At the Python interpreter prompt (usually denoted by >>>), enter the code in Listing 11-1 to create a CouchDB database. Listing 11-1. Creating a CouchDB Database in Python from couchdbkit.client import Server server = Server() server.create_db( python_test ) When you finish entering the third line from Listing 11-1, you should get a result like this: <Database python_test> Let s be skeptics in this case, however, and verify that the database has been created. Open your favorite web browser, and visit the Futon administration interface for your CouchDB server at http://127.0.0.1:5984/_utils. If the database was successfully created, you should see it in all its glory, as shown in Figure 11-1.

In listing 3.3, you access the prototype of the Cat function and add a speak method. The speak method calls the alert function to display a string with the voice of a (hungry) cat. What are the consequences of adding a method to the prototype object of the constructor First, whenever you create an object with the new operator and the Cat constructor, the new instance inherits the speak method, as shown in the following code: