в 15:31, 26 мая 2010

2010-05-26T15:31:53Z

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2010-05-26T12:14:48Z

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==A simple generic class==

<p>T is a type parameter that will be replaced by a real type when an object of type Gen is created.</p>

<source lang="csharp">using System;

class Gen<T> {
T ob;

public Gen(T o) {
ob = o;
}

public T getob() {
return ob;
}

public void showType() {
Console.WriteLine("Type of T is " + typeof(T));
}
}

class MainClass {
public static void Main() {
Gen<int> iOb = new Gen<int>(102);
iOb.showType();

int v = iOb.getob();
Console.WriteLine("value: " + v);

Console.WriteLine();

Gen<string> strOb = new Gen<string>("Generics add power.");
strOb.showType();
string str = strOb.getob();
Console.WriteLine("value: " + str);
}
}</source>

==A simple generic class with two type parameters: T and V==

<source lang="csharp">using System;

class TwoGen<T, V> {
T ob1;
V ob2;

public TwoGen(T o1, V o2) {
ob1 = o1;
ob2 = o2;
}

public void showTypes() {
Console.WriteLine("Type of T is " + typeof(T));
Console.WriteLine("Type of V is " + typeof(V));
}

public T getT() {
return ob1;
}

public V getV() {
return ob2;
}
}

class MainClass {
public static void Main() {

TwoGen<int, string> tgObj = new TwoGen<int, string>(1, "A");

tgObj.showTypes();

int v = tgObj.getT();
Console.WriteLine("value: " + v);

string str = tgObj.getV();
Console.WriteLine("value: " + str);
}
}</source>
<pre class=codeResult>Type of T is System.Int32
Type of V is System.String
value: 1
value: A</pre>

==Generic Pair==

<source lang="csharp">using System;
using System.Collections.Generic;
using System.ruponentModel;
public sealed class Pair<TFirst, TSecond>: IEquatable<Pair<TFirst, TSecond>>{
private readonly TFirst first;
private readonly TSecond second;
public Pair(TFirst first, TSecond second)
{
this.first = first;
this.second = second;
}
public TFirst First
{
get { return first; }
}
public TSecond Second
{
get { return second; }
}
public bool Equals(Pair<TFirst, TSecond> other)
{
if (other == null)
{
return false;
}
return EqualityComparer<TFirst>.Default.Equals(this.First, other.First) &&
EqualityComparer<TSecond>.Default.Equals(this.Second, other.Second);
}
public override bool Equals(object o)
{
return Equals(o as Pair<TFirst, TSecond>);
}
public override int GetHashCode()
{
return EqualityComparer<TFirst>.Default.GetHashCode(first) * 37 +
EqualityComparer<TSecond>.Default.GetHashCode(second);
}
}</source>

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в 15:31, 26 мая 2010

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