|
/*Quote from:
Book Accelerated C# 2005
* By Trey Nash
* ISBN: 1-59059-717-6
* 432 pp.
* Published: Aug 2006
* Price: $39.99
*/
using System;
using System.Collections.Generic;
public class MyContainer<T> : IEnumerable<T>
{
public void Add( T item ) {
impl.Add( item );
}
// Converter<TInput, TOutput> is a new delegate type introduced
// in the .NET Framework that can be wired up to a method that
// knows how to convert the TInput type into a TOutput type.
public void Add<R>( MyContainer<R> otherContainer,Converter<R, T> converter ) {
foreach( R item in otherContainer ) {
impl.Add( converter(item) );
}
}
public IEnumerator<T> GetEnumerator() {
foreach( T item in impl ) {
yield return item;
}
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() {
return GetEnumerator();
}
private List<T> impl = new List<T>();
}
public class EntryPoint
{
static void Main() {
MyContainer<long> lContainer = new MyContainer<long>();
MyContainer<int> iContainer = new MyContainer<int>();
lContainer.Add( 1 );
lContainer.Add( 2 );
iContainer.Add( 3 );
iContainer.Add( 4 );
lContainer.Add( iContainer,
EntryPoint.IntToLongConverter );
foreach( long l in lContainer ) {
Console.WriteLine( l );
}
}
static long IntToLongConverter( int i ) {
return i;
}
}
|
