Foreach & foreach support

Not only List <T> has the right to foreach/ForEach, but we can easily implement it.
Just like this,

Public class ForEachSupport {
Static void Main (string [] args ){
Console. WriteLine ("foreach & ForEach support ");

EnumerableClass <Document> ec = new EnumerableClass <Document> ();
Ec. link (Document. create ("hello "));
Ec. link (Document. create ("world "));
Ec. link (Document. create ("!!! "));

Foreach (document each in EC ){
Console. writeline (each. Title );
}

EC. foreach (delegate (document each ){
Console. writeline (each. Title );
});

Console. Readline ();
}
}

Implementation is also very simple, Public class enumerableclass <t>: ienumerable <t> {
Private List <T> collection = new List <T> ();

Public IEnumerator <T> GetEnumerator (){
Foreach (T each in collection ){
Yield return each;
}
}

IEnumerator IEnumerable. GetEnumerator (){
Return GetEnumerator ();
}

Public void ForEach (Action <T> action ){
Collection. ForEach (action );
}

Public void link (T entity ){
Collection. Add (entity );
}
}

That's OK, all of it.