в 15:31, 26 мая 2010

2010-05-26T15:31:53Z

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2010-05-26T12:16:02Z

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==Define private constructors to make a singleton==

<source lang="csharp">public class MyClass
{
static MyClass cache = null;
static object cacheLock = new object();
private MyClass()
{
// useful stuff here
}

public static MyClass GetMyClass()
{
lock(cacheLock)
{
if (cache == null)
cache = new MyClass();

return(cache);
}
}
}</source>

==private static and const Fields==

<source lang="csharp">using System;
class MainClass
{
static void Main(string[] args)
{
MyTV tv = new MyTV();
}
}
public class MyTV
{
public MyTV()
{
channel = 2;
}
private static int channel = 2;
private const int maxChannels = 200;
}</source>

==Use Properties to get and set private member variable==

<source lang="csharp">using System;
class Circle{
int radius;

public int Radius{
get{
return(radius);
}
set{
radius = value;
}
}
}
class MainClass
{
public static void Main()
{
Circle c = new Circle();
c.Radius = 35;
}
}</source>

==Using Methods to change private fields==

<source lang="csharp">using System;
class Class1
{
static void Main(string[] args)
{
MyCar car = new MyCar();
int refChan = 0;
int chan = 0;
car.GetSpeed( chan );
car.GetSpeed( ref refChan );
}
}
public class MyCar
{
private static int speed = 2;
private const int maxSpeed = 200;

public bool ChangeSpeed(int newSpeed)
{
if( newSpeed > maxSpeed )
return false;
speed = newSpeed;
return true;
}
public void GetSpeed( int param )
{
param = speed;
}
public void GetSpeed( ref int param )
{
param = speed;
}
}</source>

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Csharp/CSharp Tutorial/Class/private - История изменений

в 15:31, 26 мая 2010

Admin: 1 версия