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The Visitor Design Pattern PowerPoint Presentation

worldwideweb By : worldwideweb

On : Jan 08, 2015

In : News & Politics

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  • Slide 1 - The Visitor Design Pattern Jesse Snider
  • Slide 2 - What’s It All About? Allows for new operations to be defined and used on elements of an object structure with out changing the contents of those elements. The Key is Double Dispatch
  • Slide 3 - Where Applicable Rarely Changing Object Structures Using Unrelated Operations Many Classes with Differing Interfaces
  • Slide 4 - How it Works Concrete Object Structure Assume Rarely Changing Bank Accounts
  • Slide 5 - Add an Inquiry Operation Inquiry to Display Accounts Don’t Want to Change Structure Create a Visitor Structure Account Visitor
  • Slide 6 - Account Visitor Interface
  • Slide 7 - Inquiry Visitor
  • Slide 8 - Account Structure Change
  • Slide 9 - Account Interface
  • Slide 10 - Checking Account
  • Slide 11 - Savings Account
  • Slide 12 - Main Method

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