start web wide world

start web wide world resources brought to you by aldenhosting.com

start web wide world

start web wide world information is available by clicking above

Since 1998, Alden Hosting is a provider of business-class Web hosting to small- and medium-sized businesses, providing professional, efficient, and reliable services. We provide everything you need to get your business on the Internet. We make it easy and affordable. Alden Hosting's feature-rich hosting plans and excellent 7 days a week toll-free customer support empower you to efficiently build a Web business that will grow with your changing needs.

Site Map
start web wide world start web wide world This is made possible by the method Kernel::block_given? , which returns true if a block is associated with the current method. Using it, you could implement File.open (again, ignoring error handling) using something like the following. class File def File.myOpen(*args) aFile = File.

start web wide world new(*args) # If there's a block, pass in the file and close # the file when it returns if block_given? yield aFile aFile.close aFile = nil end return aFile end end Blocks Can Be Closures Let's get back to our jukebox for a moment (remember the jukebox?). At some point we'll be working on the code that handles the user interface---the buttons that people press to select songs and control the jukebox. We'll need to associate actions with those buttons: press STOP and the music stops. It turns out that Ruby's blocks are a convenient way to do this.

start web wide world Let's start out by assuming that the people who made the hardware implemented a Ruby extension that gives us a basic button class. (We talk about extending Ruby beginning on page 169.) bStart = Button.new("Start") bPause = Button.new("Pause") # .

start web wide world .. What happens when the user presses one of our buttons? In the Button class, the hardware folks rigged things so that a callback method, buttonPressed, will be invoked. The obvious way of adding functionality to these buttons is to create subclasses of Button and have each subclass implement its own buttonPressed method. class StartButton < Button def initialize super("Start") # invoke Button's initialize end def buttonPressed # do start actions.

start web wide world

Web Hosting Links Portal
Web Hosting JSP Hosting Tomcat Hosting MySQL Hosting servlets Hosting
Web Site Hosting JSP Hosting Tomcat Hosting MySQL Hosting servlets Hosting
JSP Web Hosting JSP Web Hosting
Servlet Web Hosting Servlet Web Hosting
Alden Trading Alden Shoes ebootery Minnetonka Moccasins myMoccasins
Protecting Your Assets Portal
Offshorelaw links Offshorelaw
INTERNET LARGEST NEW CAR BUYING SERVICE
Where You will Find every wedding service you will need
Where You will Find every wedding service you will need
unemployment benefit services
unemployment benefit services unemployment benefit services
Menu Paper Menu Paper
Dancing Waters Dancing Waters

start web wide world