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Fundamental Design Patterns �Two-Stage Creation �Template Method �Dynamic Creation �Category �Selector �Selector �Singleton �Delegates © 2011, FuGenX <strong>Technologies</strong> Confidential 10 10
Two Stage Creation � The Two-Stage Creation pattern separates the first stage, object memory allocation, from the second stage, object initialization. � Enable the use of initializers regardless of the way memory is allocated. � Avoid the need to implement too many initializers when subclassing. � Simplify the creation and use of temporary instances. © 2011, FuGenX <strong>Technologies</strong> Confidential 11 11
Page 1 and 2: FuGenX Technologies Private Limited
Page 3 and 4: Model View controller - Example �
Page 5 and 6: NSObject � NSObject is a base cla
Page 7 and 8: NSObject Methods � init - Initial
Page 9: Over-riding Base Class Methods �
Page 13 and 14: Two - Stage Creation Due to so many
Page 15 and 16: Two - Stage Creation Zones Memory z
Page 17 and 18: Two - Stage creation � Regardless
Page 19 and 20: Default Template Methods Template M
Page 21 and 22: Template Method When You Should Cal
Page 23 and 24: NSObject Template Methods Template
Page 25 and 26: Dynamic Creation The basis of this
Page 27 and 28: Category We use the Category patter
Page 29 and 30: Category @implementation NSMutableA
Page 31 and 32: Singleton � The Singleton pattern
Page 33 and 34: Singleton Creating and Accessing a
Page 35 and 36: Singleton A basic implementation of
Page 37 and 38: + (id)new { return [self alloc]; }
Page 39 and 40: Deallocation Singleton + (void)atte
Page 41 and 42: Delegates � A delegate is an obje
Page 43 and 44: Delegates © 2011, FuGenX Technolog
Page 45 and 46: Delegates Slider © 2011, FuGenX Te
Page 47 and 48: @implementation Controller Delegate
Page 49 and 50: Delegates @protocol ModelDelegate
Page 51 and 52: Delegates @protocol SliderDelegate
Page 53: Thank You © 2011, FuGenX Technolog

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