Concurrency in D

[FrankLike via Digitalmars-d]

There is a int[] ,how to use the Fiber execute it ?
Such as :

import std.stdio;
import core.thread;


class DerivedFiber : Fiber
{
     this()
     {
         super( &run );
     }

private :
     void run()
     {
         printf( "Derived fiber running.\n" );
         faa();
     }
}

int[] v;

  void ftread()
{
	DerivedFiber work = new DerivedFiber();
	writeln( " will call " );
	work.call();
	writeln( " stop call " );
}
void faa()
{
	writeln( " start " );
	//Fiber.yield();
	writeln( " start yield " );
     foreach(c;v)
     {
     	writeln( " current n is ",b(c) );
     }
}

void b(int n)
{
   ...//do someting for n
}

void main()
{
int n=1;
	while(n<=10_001)
	{
		v~=n;
		n+=5000;
	}
printf( "Execution returned to calling context.\n" );
   ftread();
}
-------------end------------

I dont's think it's a good work.
How about you?

Thank you.