Object-oriented programming using C# programming language 04

Object-oriented programming using C# programming language 04

• 1.
  Object Oriented Programing [OOP]
• 2.
  Revision
• 3.
  Relationships Between Classes 1. Inheritance2. Association FulltimeEmployee : Employee Fulltime Employee is A Employee
• 4.
  Relationships Between Classes 1. Inheritance2. Association Class Product { } Class OrderItem { Product Product ; } Association Composition Class Chair{} Class Room { chair[] Chairs; } Orderitem Has a Product Association Aggregation Room Has Chairs
• 7.
  Binding Reference From Parent=> Object From Child
• 8.
  ● Static bindingworks during compile time ● Compiler Will Bind Function Call Based On Reference Type Not Object Type ● Dynamic binding works during run time ● CLR Will Bind Function Call Based On Object Type Not Reference Type
• 9.
  Session 04
• 10.
  Session Content 1. Interface 2. DeepCopy And Shallow Copy 3. Built In Interface [ICloneable] 4. Built In Interface [IComparable] 5. Built In Interface [IComparer]
• 11.
  Interface
• 12.
  Interf ace C# Keywords IndicateThe Accessibility Scope What You Can Write Inside The Interface 1. Signature for Property 2. Signature for Method 3. Default Implemented Method
• 13.
  C# Keywords IndicateThe Accessibility Scope ● Default Access Modifier Inside Interface => Public ● Default Access Modifier of Interface => Internal ● Private Access Modifier is not allowed inside interface ● You Can not Create an object from interface but you can create a reference from interface ● Interface is a Code Contract Between 2 Developers ● Interface Can Be Implemented Through Class Or Struct Interf ace
• 14.
  C# Keywords IndicateThe Accessibility Scope Interf ace
• 15.
  Shallow Copy andDeep Copy [Array Of Value Type]
• 16.
  Shallow Copy : StackHeap int[] Arr01 = { 1, 2, 3 }; int[] Arr02 = new int[3]; Arr01 2 3 0 0 0 Arr02 Arr02 = Arr01; Arr01[0] = 10; 1 10 Console.WriteLine($"Arr01[0] = {Arr01[0]}"); Console.WriteLine($"Arr02[0] = {Arr01[0]}"); // 10 //10 Object Identity Object State [Address] [ 1, 2,3]
• 17.
  Deep Copy : StackHeap int[] Arr01 = { 1, 2, 3 }; int[] Arr02 = new int[3]; Arr01 2 3 0 0 0 Arr02 Arr02 = (int[])Arr01.Clone(); Arr01[0] = 10; 1 10 Console.WriteLine($"Arr01[0] = {Arr01[0]}"); Console.WriteLine($"Arr02[0] = {Arr01[0]}"); // 10 // 1 1 2 3 Object Identity Object State [Address] [ 1, 2,3]
• 18.
  Shallow Copy andDeep Copy [Array of Reference Type]
• 19.
  Array Of String [Immutable]
• 20.
  Shallow Copy : StackHeap String[] Names01 = new String[1] Names01[0] = “Omar”; Names01 SRef01 SRef02 Names02 string[] Names02 = new string[1]; Names02 = Names01; Names02[0] = “Aya”; Omar Aya CWL($"Name01[0].Name = {Names01[0]}"); CWL($"Name02[0].Name = {Names02[0]}");
• 21.
  Deep Copy : StackHeap String[] Names01 = new String[1] Names01[0] = “Omar”; Names01 SRef01 SRef02 Names02 string[] Names02 = new string[1]; Names02 = (string[])Names01.Clone(); Names01[0] = “Aya”; Omar Aya CWL($"Name01[0].Name = {Names01[0]}"); CWL($"Name02[0].Name = {Names02[0]}"); SRef01
• 22.
  Array Of StringBuilder[Mutable]
• 23.
  Shallow Copy : StackHeap StringBuilder[] Names01 = new StringBuilder[1] Names01[0] = new StringBuilder("Omar"); Names01 SBRef01 SBRef02 Names02 StringBuilder[] Names02 = new StringBuilder[1]; Names02 = Names01; Names02[0].Append("Ahmed"); Omar OmarAhmed CWL($"Name01[0].Name = {Names01[0]}"); CWL($"Name02[0].Name = {Names02[0]}");
• 24.
  Deep Copy : StackHeap StringBuilder[] Names01 = new StringBuilder[1] Names01[0] = new StringBuilder("Omar"); Names01 SBRef01 SBRef02 Names02 StringBuilder[] Names02 = new StringBuilder[1]; Names02 = (StringBuilder[])Names01.Clone(); Names02[0].Append("Ahmed"); Omar OmarAhmed CWL($"Name01[0].Name = {Names01[0]}"); CWL($"Name02[0].Name = {Names02[0]}"); SBRef01
• 25.
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