Some Design Pattern in .NET C#
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It's about Singleton Pattern, Factory Methods and something called Privacy Leaks.
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Some Design Pattern in .NET C#
- 3. Class hanya bisa diinstansiasi paling banyak 1 kali.
- 4. How?
- 7. static method, Instance() Private Constructor
- 8. static method, Instance() uniqueInstance NULL? new Singleton() Private Constructor
- 9. Example :
- 10. Example of use:
- 11. Example of use:
- 13. Factory Methods
- 14. In some situations Direct use of constructors is not flexible enough
- 15. For example: Class Point (in earlier chapter) Wee need constructor for both Polar or Rectangular initialization And it’s need 2 parameters.
- 16. And it’s SUX!
- 17. How?
- 19. Create Methods Who Delegate their work to the private constructor
- 21. Example :
- 22. Example :
- 24. Privacy Leaks
- 25. A method can return part of its private state, which can be mutated outside the object
- 27. Let’s see how it works :
- 28. Let’s see how it works :
- 29. Let’s see how it works :
- 30. HORRAAY !!! Gilang Abdul Aziz @Ltheordinary
Editor's Notes
- We have already studied class Point several times, see Section 11.6 and Section 14.6. In the version of classPoint shown in Program 16.5 below we need constructors for both polar and rectangular initialization ofpoints. Recall that rectangular represented points have ordinary (x,y) coordinates and that polar representedpoints have (r,a) - radius and angle - coordinates. If we use two constructors for the initialization, both willtake two double parameters. In Program 16.5 we supply an extra enumeration parameter to the lastconstructor, shown in line 16. This is an ugly solution.