в 15:31, 26 мая 2010

2010-05-26T15:31:53Z

Admin: 1 версия

2010-05-26T12:16:07Z

1 версия

Новая страница

==Cloneable Point==

<source lang="csharp">using System;
using System.Collections.Generic;
using System.Text;

public class Point : ICloneable {
public int x, y;
public PointDescription desc = new PointDescription();
public Point() { }
public Point(int x, int y) {
this.x = x; this.y = y;
}
public Point(int x, int y, string petname) {
this.x = x;
this.y = y;
desc.petName = petname;
}
public object Clone() {
Point newPoint = (Point)this.MemberwiseClone();
PointDescription currentDesc = new PointDescription();
currentDesc.petName = this.desc.petName;
newPoint.desc = currentDesc;
return newPoint;
}
public override string ToString() {
return string.Format("X = {0}; Y = {1}; Name = {2};\nID = {3}\n",x, y, desc.petName, desc.pointID);
}
}
public class PointDescription {
public string petName;
public Guid pointID;
public PointDescription() {
this.petName = "No-name";
pointID = Guid.NewGuid();
}
}
class Program {
static void Main(string[] args) {
Point p1 = new Point(50, 50);
Point p2 = p1;
p2.x = 0;
Console.WriteLine(p1);
Console.WriteLine(p2);
Point p3 = new Point(100, 100, "Jane");
Point p4 = (Point)p3.Clone();
Console.WriteLine("p3: {0}", p3);
Console.WriteLine("p4: {0}", p4);
p4.desc.petName = "Mr. X";
p4.x = 9;
Console.WriteLine("p3: {0}", p3);
Console.WriteLine("p4: {0}", p4);
}
}</source>

==Clone a list of cloneable objects==

<source lang="csharp">using System;
using System.Text;
using System.Collections.Generic;
public class Employee : ICloneable
{
public string Name;
public string Title;
public int Age;
public Employee(string name, string title, int age)
{
Name = name;
Title = title;
Age = age;
}
public object Clone()
{
return MemberwiseClone();
}
public override string ToString()
{
return string.Format("{0} ({1}) - Age {2}", Name, Title, Age);
}
}
public class EmployeeList : ICloneable
{
public List<Employee> EmployeeListMembers = new List<Employee>();
public EmployeeList()
{
}
private EmployeeList(List<Employee> members)
{
foreach (Employee e in members)
{
EmployeeListMembers.Add((Employee)e.Clone());
}
}
public void AddMember(Employee member)
{
EmployeeListMembers.Add(member);
}
public override string ToString()
{
StringBuilder str = new StringBuilder();
foreach (Employee e in EmployeeListMembers)
{
str.AppendFormat(" {0}\r\n", e);
}
return str.ToString();
}
public object Clone()
{
return new EmployeeList(this.EmployeeListMembers);
}
}
public class MainClass
{
public static void Main()
{
EmployeeList team = new EmployeeList();
team.AddMember(new Employee("A", "AA", 4));
team.AddMember(new Employee("B", "BB", 8));
team.AddMember(new Employee("C", "CC", 8));
EmployeeList clone = (EmployeeList)team.Clone();
Console.WriteLine("Original EmployeeList:");
Console.WriteLine(team);
Console.WriteLine("Clone EmployeeList:");
Console.WriteLine(clone);
Console.WriteLine("*** Make a change to original team ***");
team.EmployeeListMembers[0].Name = "L";
team.EmployeeListMembers[0].Title = "M";
team.EmployeeListMembers[0].Age = 4;
Console.WriteLine("Original EmployeeList:");
Console.WriteLine(team);
Console.WriteLine("Clone EmployeeList:");
Console.WriteLine(clone);
}
}</source>
<pre class=codeResult>Original EmployeeList:
A (AA) - Age 4
B (BB) - Age 8
C (CC) - Age 8
Clone EmployeeList:
A (AA) - Age 4
B (BB) - Age 8
C (CC) - Age 8
*** Make a change to original team ***
Original EmployeeList:
L (M) - Age 4
B (BB) - Age 8
C (CC) - Age 8
Clone EmployeeList:
A (AA) - Age 4
B (BB) - Age 8
C (CC) - Age 8</pre>

==Implement ICloneable interface==

<source lang="csharp">using System;
class MyValue
{
public MyValue(int count)
{
this.count = count;
}
public int count;
}
class MyObject: ICloneable
{
public MyObject(int count)
{
this.contained = new MyValue(count);
}
public object Clone()
{
Console.WriteLine("Clone");
return(new MyObject(this.contained.count));
}
public MyValue contained;
}
class MainClass
{
public static void Main()
{
MyObject my = new MyObject(33);
MyObject myClone = (MyObject) my.Clone();
Console.WriteLine("Values: {0} {1}", my.contained.count, myClone.contained.count);
myClone.contained.count = 15;
Console.WriteLine("Values: {0} {1}", my.contained.count, myClone.contained.count);
}
}</source>
<pre class=codeResult>Clone
Values: 33 33
Values: 33 15</pre>

← Предыдущая	Версия 15:31, 26 мая 2010
(нет различий)

Csharp/CSharp Tutorial/Class/ICloneable - История изменений

в 15:31, 26 мая 2010

Admin: 1 версия